Local Coverage Determination (LCD)

MolDX: NRAS Genetic Testing

L35073

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Proposed LCD
Proposed LCDs are works in progress that are available on the Medicare Coverage Database site for public review. Proposed LCDs are not necessarily a reflection of the current policies or practices of the contractor.

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Source LCD ID
N/A
LCD ID
L35073
Original ICD-9 LCD ID
Not Applicable
LCD Title
MolDX: NRAS Genetic Testing
Proposed LCD in Comment Period
N/A
Source Proposed LCD
N/A
Original Effective Date
For services performed on or after 10/01/2015
Revision Effective Date
For services performed on or after 07/27/2023
Revision Ending Date
N/A
Retirement Date
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Notice Period End Date
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Issue

Issue Description

This LCD outlines limited coverage for this service with specific details under Coverage Indications, Limitations and/or Medical Necessity.

Issue - Explanation of Change Between Proposed LCD and Final LCD

CMS National Coverage Policy

Title XVIII of the Social Security Act (SSA), §1862(a)(1)(A) allows coverage and payment for only those services that are considered to be reasonable and necessary

Title XVIII of the Social Security Act, §1862(a)(1)(D) Allows coverage and payment for clinical care items and services provided with the concurrence of the Secretary and with respect to research and experimentation conducted by, or under contract with, the Medicare Payment Advisory Commission or the Secretary, which are not reasonable and necessary to carry out the purposes of section

42 Code of Federal Regulations (CFR) 410.32(a) Diagnostic x-ray tests, diagnostic laboratory tests, and other diagnostic tests: Conditions

CMS Internet-Only Manual, Pub.100-02, Medicare Benefit Policy Manual, Chapter 15, §80 Requirements for Diagnostic X-Ray, Diagnostic Laboratory, and Other Diagnostic Tests, §80.1.1 Certification Changes, §80.6 Requirements for Ordering and Following Orders for Diagnostic Tests



Coverage Guidance

Coverage Indications, Limitations, and/or Medical Necessity

Indications:

This is a limited coverage policy for genetic testing of tumor tissue for somatic mutations in the NRAS gene. The Molecular Diagnostic Program (MolDX®) will cover NRAS testing for metastatic colorectal cancer, per National Comprehensive Cancer Network (NCCN®) guidelines (Version 2.2016).

All other NRAS testing is non-covered.

Background:

RAS oncogene is a superfamily of signal transduction proteins, which are proteins that communicate signals between the cells. Deoxyribonucleic acid (DNA) mutations in the RAS family genes turns the signals on permanently such that the cells divide nonstop, leading to cancer. Three of this family’s proteins, HRAS, KRAS, and NRAS are important in tumors and encode 21kD proteins called p21s.

Previous studies have shown that targeting oncogenic NRAS-driven melanomas requires decrease in both pERK and pAKT downstream of RAS-effectors for efficacy, which could be achieved by either targeting both BRAF and CRAF or BRAF and PIK3CA simultaneously in NRAS mutant tumor cells.

Colorectal Cancer:

Multiple signaling pathways are involved in colorectal cancer pathogenesis. The epidermal growth factor receptor (EGFR) plays a key role in activation of these pathways and is commonly overexpressed in metastatic colorectal cancer (mCRC). Consequently, EGFR is a target of anticancer therapies. Two of these drugs, cetuximab and panitumumab, are monoclonal antibodies that block EGFR action. The 2013 NCCN Clinical Practice Guidelines for Colon Cancer describes a recent study by Douillard et al7 which reported that 17% of 641 patients from the PRIME trial without KRAS exon 2 mutations were found to have mutations in exons 3 and 4 of KRAS or mutations in exons 2, 3, and 4 of NRAS. A predefined retrospective analysis of a subset of these patients showed that progression free survival (PFS) and overall survival (OS) were decreased in those who received panitumumab plus FOLFOX compared to those who received FOLFOX alone. For this reason, the Food and Drug Administration (FDA) indication for panitumumab was recently updated to state that panitumumab is not indicated for the treatment of patients with NRAS mutation-positive disease in combination with oxaliplatin-based chemotherapy.

In chemotherapy-refractory patients, fewer than 10% of patients who harbor one of these mutations respond to EGFR immunotherapy. The American Society of Clinical Oncology (ASCO) and the NCCN® both recommend KRAS mutation testing prior to prescribing EGFR antagonist therapy for patients with mCRC and state that alternative therapy should be prescribed when mutations are detected.

However, NCCN Colorectal Guidelines (Version 2.2016) recommend “All patients with metastatic colorectal cancer should have tumor tissue genotyped for RAS mutations (KRAS and NRAS) and BRAF mutations. Patients with any known KRAS mutation (exon 2 or non-exon 2) or NRAS mutation should not be treated with either cetuximab or panitumumab.”3 Evidence increasingly suggests that BRAF V600E mutation makes response to panituumab or cetuximab highly unlikely, as a single agent, or in combination with cytotoxic chemotherapy. In light of the above, KRAS, NRAS and BRAF are covered for metastatic colorectal cancer.

Metastatic Melanoma:

The NRAS gene encodes a protein that helps control cell division. Approximately 15% to 20% of melanomas harbor an oncogenic NRAS mutation. NRAS mutations can occur in all melanoma subtypes, but may be slightly more common in skin with chronic sun damage or in nodular melanomas. In addition, NRAS mutations are not found in tumors with BRAF mutations.

Several studies have been carried out to examine whether mutations in BRAF and NRAS confer different pathological features and clinical behavior. The effect of these mutations on clinical outcome remains uncertain with previous studies reporting conflicting
results.

(Per NCCN Guidelines 3.2016- BRAF- targeted Therapies: “Approximately half of patients with metastatic cutaneous melanoma harbor an activating mutation of BRAF, an intracellular signaling kinase in the MAPK pathway. Most BRAF-activating mutations occurring in melanomas are at residue V600, usually V600E but occasionally V600K or other substitutions. BRAF inhibitors have been shown to have clinical activity in melanomas with BRAF V600 mutations. Inhibitors of MEK, a signaling molecule downstream of BRAF, may potentiate these effects. Recent efficacy and safety data from large, randomized trials testing BRAF and MEK inhibitors have significantly impacted the recommended treatment options for patients with BRAF-mutation positive advanced melanoma.”)16

The NRAS protein is a GTPase which can lead to the activation of other proteins (such as AKT and MEK) that are also in pathways that help regulate cell division. In theory, drugs that inhibit AKT or MEK also have the potential to counteract the effects of NRAS mutations, although NRAS targeting therapies are still in clinical trials. In addition, pathways that help regulate cell division also include other proteins that could potentially be targeted such as PI3K and mTOR.

Melanomas can be tested for NRAS mutations with targeted sequencing. There are several manufacturers of targeted genetic tests that can detect NRAS mutations in melanoma tumor samples. The prognostic significance of NRAS mutations is still not well understood and further investigation of the histologic types of melanomas with specific NRAS mutations in a larger series is necessary to validate these apparent impacts on patient outcomes. In smaller subsets of cutaneous melanoma, other activating mutations have been described, including NRAS, c­KIT, and CDK4.

Other Cancers:

Other neoplastic diseases in which NRAS mutations have been reported in the primary literature include: myeloid leukemia, bladder cancer, liver cancer, and proliferative thyroid lesions.

Schulten et al17 directly sequenced mutational hotspot regions encompassing codons 12, 13, and 61 of the RAS genes in 381 cases of thyroid lesions. In addition, the putative NRAS hotspot region encompassing codon 97 was sequenced in 36 thyroid lesions. Schulten and team found mutations in 16 out of 57 patients.17

Kompier et al13 reports that although they have been reported, NRAS mutations are not common in bladder cancer.

Although NRAS mutations have been identified in the above tumor types, evidence in the primary literature is limited with regard to the clinical utility of NRAS mutation testing and its impact on management and survival. There is currently insufficient evidence to demonstrate clinical utility of NRAS testing in these tumor types.

NRAS Testing in relation to Noonan syndrome diagnosis:

Noonan syndrome is a common autosomal dominant condition with an incidence of 1/1,000 to 1/2,500 people. Unlike the somatic tumor mutations discussed above, Noonan syndrome may be caused by a germline mutation in the NRAS gene which would be present in every cell of the body. Noonan syndrome is characterized by a number of phenotypic findings including distinctive facial features, short stature, heart defects, cryptorchidism, lymphedema, and coagulation defects, among others. Several syndromes have features that overlap clinically with Noonan syndrome including cardiofaciocutaneous syndrome, Costello syndrome, LEOPARD syndrome and Noonan-­like syndrome with loose anagen hair. The genetic etiologies of these conditions can also overlap with Noonan syndrome.

Several of these disorders have been referred to as neurocardiofacialcutaneous syndromes, RASopathies or Ras/MAPK pathway disorders and have a shared pathway of genetic function.

They are characterized by facial dysmorphism, cardiac disease, reduced growth, skeletal and ectodermal defects and variable cognitive deficits. They also share a predisposition to development of malignancies.

Overall, approximately 75% of individuals with Noonan syndrome will have an identifiable mutation with gene panel testing. To date, NRAS mutations have been found in 4 individual case reports which suggests that NRAS testing for Noonan syndrome is unlikely to yield positive results. The clinical features appear to be typical with no particular or distinctive phenotype observed suggesting that mutation testing targeted to select individuals is not feasible.

Genotype­phenotype correlations have emerged that can help to direct medical management for those affected with an associated condition, but not specifically for NRAS mutations. For instance, mutations in the SOS1 gene have been associated with an increased chance for ectodermal involvement, development of certain solid tumors, pulmonary stenosis, and atrial and ventricular septal defects; with an associated decreased prevalence of cognitive defects, short stature, and hypertrophic cardiomyopathy.

Medical management recommendations are available for many of the Noonan syndrome spectrum disorders. Overlapping features result in overlapping medical management recommendations, typically guided by clinical features.

Summary of Evidence

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Coding Information

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ICD-10-CM Codes that Support Medical Necessity

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ICD-10-CM Codes that DO NOT Support Medical Necessity

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Additional ICD-10 Information

General Information

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Bibliography
  1. Akslen LA, Angelini S, Straume O, et al. BRAF and NRAS mutations are frequent in nodular melanoma but are not associated with tumor cell proliferation or patient survival. J Invest Dermatol. 2005;125(2):312-317. doi:10.1111/j.0022-202X.2005.23788.x
  2. Allegra CJ, Jessup JM, Somerfield MR, et al. American Society of Clinical Oncology provisional clinical opinion: testing for KRAS gene mutations in patients with metastatic colorectal carcinoma to predict response to anti­epidermal growth factor receptor monoclonal antibody therapy. J Clin Oncol. 2009;27:2091-­2096. doi:10.1200/JCO.2009.21.9170
  3. NCCN Clinical Practice Guidelines in Oncology™: colon cancer. Version 2. 2014.
  4. Cirstea IC, Kutsche K, Dvorsky R, et al. A restricted spectrum of NRAS mutations causes Noonan syndrome. Nat Genet. 2010;42(1):27–29. doi:10.1038/ng.497
  5. DeRoock W, Claes B, Bernasconi D, et al. Effects of KRAS, BRAF, NRAS, and PIK3CA mutations on the efficacy of cetuximab plus chemotherapy in chemotherapy - ­refractory metastatic colorectal cancer: a retrospective consortium analysis. Lancet Oncol. 2010;11(8):753­-762. doi:10.1016/S1470-2045(10)70130-3
  6. Devitt B, Liu W, Salemi R, et al. Clinical outcome and pathological features associated with NRAS mutation in cutaneous melanoma. Pigment Cell Melanoma Res. 2011;24(4):666–672. doi:10.1111/j.1755-148X.2011.00873.x
  7. Douillard JY, Oliner KS, Siena S, et al. Panitumumab­ FOLFOX4 treatment and RAS mutations in colorectal cancer. N Engl J Med. 2013;369(11):1023­-1034. doi:10.1056/NEJMoa1305275
  8. Edlundh­-Rose E, Egyházi S, Omholt K, et al. NRAS and BRAF mutations in melanoma tumours in relation to clinical characteristics: a study based on mutation screening by pyrosequencing. Melanoma Res. 2006;16(6):471-478.                                                            
  9. Gavin PG, Colangelo LH, Fumagalli D, et al. Mutation profiling and microsatellite instability in stage II and III colon cancer: an assessment of their prognostic and oxaliplatin predictive value. Clin Cancer Res. 2012;18(23):6531-6541. doi:10.1158/1078-0432.CCR-12-0605
  10. Goel VK, Lazar AJ, Warneke CL, Redston MS, Haluska FG. Examination of mutations in BRAF, NRAS, and PTEN in primary cutaneous melanoma. J Invest Dermatol. 2006;126(1):154-160. doi:10.1038/sj.jid.5700026
  11. Jaiswal BS, Janakiraman V, Kljavin NM, et al. Combined Targeting of BRAF and CRAF or BRAF and PI3K effector pathways is required for efficacy in NRAS mutant tumors. PloS One. 2009;4(5):e5717. doi:10.1371/journal.pone.0005717
  12. Kakavand H, Scolyer RA, Thompson JF, Mann GJ. Identification of new prognostic biomarkers for Stage III metastatic melanoma patients. Oncoimmunology. 2013;2(9):e25564. doi:10.4161/onci.25564
  13. Kompier LC, Lurkin I, Van der Aa MN, van Rhijn BW, van der Kwast TH, Zwarthoff EC. FGFR3, HRAS, KRAS, NRAS and PIK3CA mutations in bladder cancer and their potential as biomarkers for surveillance and therapy. PloS One. 2010;5(11):e13821. doi:10.1371/journal.pone.0013821
  14. Lee JH, Choi JW, Kim YS. Frequencies of BRAF and NRAS mutations are different in histological types and sites of origin of cutaneous melanoma: a meta­-analysis. Br J Dermatol. 2011;164:776–784. doi:10.1111/j.1365-2133.2010.10185.x
  15. Lepri F, De Luca A, Stella L, et al. SOS1 mutations in Noonan syndrome: molecular spectrum, structural insights on pathogenic effects, and genotype-­phenotype correlations. Hum Mutat. 2011;32(7):760­-772. doi:10.1002/humu.21492
  16. NCCN Clinical Practice Guidelines in Oncology™: melanoma. Version 3.2016.
  17. Schulten HJ, Salama S, Al-­Ahmadi A, et al. Comprehensive survey of HRAS, KRAS, and NRAS mutations in proliferative thyroid lesions from an ethnically diverse population. Anticancer Res. 2013;33(11):4779-4784.
  18. Singhal R and Kandel ES. The response to PAK1 inhibitor IPA3 distinguishes between cancer cells with mutations in BRAF and Ras oncogenes. Oncotarget. 2012;3(7):700-708. doi:10.18632/oncotarget.587
  19. Stockman D, Tetzlaff MT, Al-Zaid T, et al. Differential clinical associations of BRAF and NRAS mutations among histologic types of cutaneous melanomas. J Clin Oncol. Published Online 2013. 
  20. Tartaglia M, Gelb BD. Disorders of dysregulated signal traffic through the RAS-­MAPK pathway: phenotypic spectrum and molecular mechanisms. Ann N Y Acad Sci. 2010;1214:99-­121. doi:10.1111/j.1749-6632.2010.05790.x
  21. Tartaglia M, Gelb BD, Zenker M. Noonan syndrome and clinically related disorders. Best Pract Res Clin Endocrinol Metab. 2011;25(1):161­-179. doi:10.1016/j.beem.2010.09.002
  22. Tidyman WE, Rauen KA. The RASopathies: developmental syndromes of Ras/MAPK pathway dysregulation. Curr Opin Genet Dev. 2009;19(3):230-236. doi:10.1016/j.gde.2009.04.001
  23. Vaughn CP, Zobell SD, Furtado LV, Baker CL, Samowitz WS. Frequency of KRAS, BRAF, and NRAS mutations in colorectal cancer. Genes Chromosomes Cancer. 2011;50(5):307­-312. doi:10.1002/gcc.20854

Revision History Information

Revision History Date Revision History Number Revision History Explanation Reasons for Change
07/27/2023 R19

Under CMS National Coverage Policy updated section headings and revised the following regulation: CMS Internet-Only Manual, Pub. 100-02, Medicare Policy Manual, Chapter 15, §80.6 Requirements for Ordering and Following Orders for Diagnostic Tests to include sections 80 and 80.1.1. Under Bibliography changes were made to citations to reflect AMA citation guidelines. Formatting, punctuation and typographical errors were corrected throughout the LCD.

  • Provider Education/Guidance
10/07/2021 R18

Under CMS National Coverage Policy added regulations Title XVIII of the Social Security Act (SSA), §1862(a)(1)(A) and 42 CFR 410.32(a). Under Sources of Information moved all citations to the Bibliography section. Changes were made to citations to reflect AMA citation guidelines. Punctuation and typographical errors were corrected throughout the LCD. Acronyms were defined and inserted where appropriate throughout the LCD. This revision is retroactive effective for dates of service on or after 10/1/2021.

  • Provider Education/Guidance
11/07/2019 R17

This LCD is being revised in order to adhere to CMS requirements per Chapter 13, Section 13.5.1 of the Program Integrity Manual, to remove all coding from LCDs. There has been no change in coverage with this LCD revision. Regulations regarding billing and coding were removed from the CMS National Coverage Policy section of this LCD and placed in the related Billing and Coding: MolDX: NRAS Genetic Testing A56962 article.

At this time 21st Century Cures Act will apply to new and revised LCDs that restrict coverage which requires comment and notice. This revision is not a restriction to the coverage determination; and, therefore not all the fields included on the LCD are applicable as noted in this policy.

  • Provider Education/Guidance
08/29/2019 R16

All coding located in the Coding Information section has been moved into the related Billing and Coding: MolDX: NRAS Genetic Testing A56962 article and removed from the LCD.

At this time 21st Century Cures Act will apply to new and revised LCDs that restrict coverage which requires comment and notice. This revision is not a restriction to the coverage determination; and, therefore not all the fields included on the LCD are applicable as noted in this policy.

  • Provider Education/Guidance
02/26/2018 R15 The Jurisdiction "J" Part B Contracts for Alabama (10112), Georgia (10212) and Tennessee (10312) are now being serviced by Palmetto GBA. The notice period for this LCD begins on 12/14/17 and ends on 02/25/18. Effective 02/26/18, these three contract numbers are being added to this LCD. No coverage, coding or other substantive changes (beyond the addition of the 3 Part B contract numbers) have been completed in this revision.
  • Change in Affiliated Contract Numbers
01/29/2018 R14 The Jurisdiction "J" Part A Contracts for Alabama (10111), Georgia (10211) and Tennessee (10311) are now being serviced by Palmetto GBA. The notice period for this LCD begins on 12/14/17 and ends on 01/28/18. Effective 01/29/18, these three contract numbers are being added to this LCD. No coverage, coding or other substantive changes (beyond the addition of the 3 Part A contract numbers) have been completed in this revision.
  • Change in Affiliated Contract Numbers
11/23/2017 R13

Completed Annual Validation. No changes.

  • Other
09/21/2017 R12

Added contractor number 11201 which was inadvertently left off during the Super MAC transition. Corrected bulleting issues in the Sources of Information section.

DATE (09/14/2017): At this time 21st Century Cures Act will apply to new and revised LCDs that restrict coverage which requires comment and notice. This revision is not a restriction to the coverage determination; and, therefore not all the fields included on the LCD are applicable as noted in this policy.

  • Typographical Error
01/19/2017 R11 Added the following ICD-10 codes under Group 1 that were left out of the C79.00-C79.9 range in error.
C79.01, C79.02, C79.10,C79.11, C79.19, C79.2, C79.31, C79.32, C79.40, C79.49, C79.51, C79.52, C79.60, C79.61, C79.62, C79.70, C79.71, C79.72, C79.81, C79.82, C79.89, C79.9
  • Other (Added the following ICD-10 codes under Group 1 that were left out of the C79.00-C79.9 range in error.
    C79.01, C79.02, C79.10,C79.11, C79.19, C79.2, C79.31, C79.32, C79.40, C79.49, C79.51, C79.52, C79.60, C79.61, C79.62, C79.70, C79.71, C79.72, C79.81, C79.82, C79.89, C79.9)
01/19/2017 R10 Added primary and secondary diagnoses codes under ICD-10 Codes that Support Medical Necessity:

Group 1:
C77.0-C77.9 Secondary and unspecified malignant neoplasm of lymph nodes
C78.00-C78.89 –- Secondary malignant neoplasm of respiratory and digestive organs
C79.00-C79.9 Secondary malignant of other and unspecified sites

Group 2:
C18.0-C18.9 – Malignant neoplasm of colon
C19 – Malignant neoplasm of recto-sigmoid junction
C20 – Malignant neoplasm of rectum
  • Other (Added primary and secondary diagnoses codes under ICD-10 Codes that Support Medical Necessity

    Group 1:
    C77.0-C77.9 Secondary and unspecified malignant neoplasm of lymph nodes
    C78.00-C78.89 –- Secondary malignant neoplasm of respiratory and digestive organs
    C79.00-C79.9 Secondary malignant of other and unspecified sites

    Group 2:
    C18.0-C18.9 – Malignant neoplasm of colon
    C19 – Malignant neoplasm of recto-sigmoid junction
    C20 – Malignant neoplasm of rectum)
12/08/2016 R9 Annual review completed. updated date of reference material(s) for NCCN guidelines and minor paraphrasing of words for clarity.
  • Other (Annual review completed. updated date of reference material(s) for NCCN guidelines and minor paraphrasing of words for clarity.)
01/01/2016 R8 Replaced CPT code 81404 in the opening sentence with CPT code 81311.
  • Other (Replaced CPT code 81404 in the opening sentence with CPT code 81311. 81404 was the correct code in 2015 but was changed to 81311 for 2016.)
01/01/2016 R7 Added 2016 CPT code 81311 and removed 81404
  • Revisions Due To CPT/HCPCS Code Changes
12/03/2015 R6 Annual validation review. Updated version for NCCN guidelines referenced in policy and replaced Palmetto with MolDX.
  • Other (Annual validation)
10/01/2015 R5 CPT code 81479 added to policy
  • Revisions Due To ICD-10-CM Code Changes
10/01/2015 R4 Addition of MolDX to LCD title
  • Other (per request of MAC's using MolDX service)
10/01/2015 R3 Completed Annual Validation
  • Other (Annual Validation)
10/01/2015 R2 For the following CPT/HCPCS codes either the short description and/or the long description was changed. Depending on which description is used in this LCD, there may not be any change in how the code displays in the document:
81404 descriptor was changed in Group 1
  • Revisions Due To CPT/HCPCS Code Changes
10/01/2015 R1 Changed policy from noncoverage to limited coverage, per NCCN Coloractal Guidelines. Also added ICD-10 C78.5 to Codes that Support Medical Necessity.
  • Other (NCCN Guidelines changed policy from noncovered to limited coverage. )
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Keywords

  • NRAS Genetic Testing

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