Choosing ICD-10-CM Codes

Step 1: Look up the term for the diagnosis in the Alphabetic Index.

Cystitis (exudative) (hemorrhagic) (septic) (suppurative)  N30.90
- acute N30.00
- - with hematuria N30.01

The Alphabetic Index shows code N30.01 as the code for acute cystitis with hematuria. Next, verify this code in the Tabular List.

Step 2: Verify the code N30.01 in the Tabular List.

N30 

Cystitis

Use additional code to identify infectious agent (B95-97)

N30.0  

Acute cystitis
N30.00 Acute cystitis without hematuria
N30.01 Acute cystitis with hematuria

The Tabular list shows code N30.01 for acute cystitis with hematuria.

Code Assignment for this Diagnosis: N30.01

Note: Excludes Notes aren’t included with all coding examples in this course. We don’t include Excludes Notes when they don’t relate to the principle we’re showing.