| R1901 | Right upper quadrant abdominal swelling, mass and lump |
| R1902 | Left upper quadrant abdominal swelling, mass and lump |
| R1903 | Right lower quadrant abdominal swelling, mass and lump |
| R1904 | Left lower quadrant abdominal swelling, mass and lump |
| R1905 | Periumbilic swelling, mass or lump |
| R1906 | Epigastric swelling, mass or lump |
| R1907 | Generalized intra-abdominal and pelvic swelling, mass and lump |
| R1909 | Other intra-abdominal and pelvic swelling, mass and lump |
| R1911 | Absent bowel sounds |
| R1912 | Hyperactive bowel sounds |
| R1915 | Other abnormal bowel sounds |
| R192 | Visible peristalsis |
| R1930 | Abdominal rigidity, unspecified site |
| R1931 | Right upper quadrant abdominal rigidity |
| R1932 | Left upper quadrant abdominal rigidity |
| R1933 | Right lower quadrant abdominal rigidity |
| R1934 | Left lower quadrant abdominal rigidity |
| R1935 | Periumbilic abdominal rigidity |
| R1936 | Epigastric abdominal rigidity |
| R1937 | Generalized abdominal rigidity |
| R194 | Change in bowel habit |
| R195 | Other fecal abnormalities |
| R197 | Diarrhea, unspecified |
| R198 | Other specified symptoms and signs involving the digestive system and abdomen |
| R85610 | Atypical squamous cells of undetermined significance on cytologic smear of anus (ASC-US) |
| R85611 | Atypical squamous cells cannot exclude high grade squamous intraepithelial lesion on cytologic smear of anus (ASC-H) |
| R85612 | Low grade squamous intraepithelial lesion on cytologic smear of anus (LGSIL) |
| R85613 | High grade squamous intraepithelial lesion on cytologic smear of anus (HGSIL) |
| R85614 | Cytologic evidence of malignancy on smear of anus |
| R85615 | Unsatisfactory cytologic smear of anus |
| R85616 | Satisfactory anal smear but lacking transformation zone |
| R85618 | Other abnormal cytological findings on specimens from anus |
| R85619 | Unspecified abnormal cytological findings in specimens from anus |
| R8581 | Anal high risk human papillomavirus (HPV) DNA test positive |
| R8582 | Anal low risk human papillomavirus (HPV) DNA test positive |
| R933 | Abnormal findings on diagnostic imaging of other parts of digestive tract |
| R935 | Abnormal findings on diagnostic imaging of other abdominal regions, including retroperitoneum |
| S27812A | Contusion of esophagus (thoracic part), initial encounter |
| S27813A | Laceration of esophagus (thoracic part), initial encounter |
| S27818A | Other injury of esophagus (thoracic part), initial encounter |
| S27819A | Unspecified injury of esophagus (thoracic part), initial encounter |
| S31600A | Unspecified open wound of abdominal wall, right upper quadrant with penetration into peritoneal cavity, initial encounter |
| S31601A | Unspecified open wound of abdominal wall, left upper quadrant with penetration into peritoneal cavity, initial encounter |
| S31602A | Unspecified open wound of abdominal wall, epigastric region with penetration into peritoneal cavity, initial encounter |
| S31603A | Unspecified open wound of abdominal wall, right lower quadrant with penetration into peritoneal cavity, initial encounter |
| S31604A | Unspecified open wound of abdominal wall, left lower quadrant with penetration into peritoneal cavity, initial encounter |
| S31605A | Unspecified open wound of abdominal wall, periumbilic region with penetration into peritoneal cavity, initial encounter |
| S31609A | Unspecified open wound of abdominal wall, unspecified quadrant with penetration into peritoneal cavity, initial encounter |
| S31610A | Laceration without foreign body of abdominal wall, right upper quadrant with penetration into peritoneal cavity, initial encounter |
| S31611A | Laceration without foreign body of abdominal wall, left upper quadrant with penetration into peritoneal cavity, initial encounter |
| S31612A | Laceration without foreign body of abdominal wall, epigastric region with penetration into peritoneal cavity, initial encounter |
| S31613A | Laceration without foreign body of abdominal wall, right lower quadrant with penetration into peritoneal cavity, initial encounter |
| S31614A | Laceration without foreign body of abdominal wall, left lower quadrant with penetration into peritoneal cavity, initial encounter |
| S31615A | Laceration without foreign body of abdominal wall, periumbilic region with penetration into peritoneal cavity, initial encounter |
| S31619A | Laceration without foreign body of abdominal wall, unspecified quadrant with penetration into peritoneal cavity, initial encounter |
| S31620A | Laceration with foreign body of abdominal wall, right upper quadrant with penetration into peritoneal cavity, initial encounter |
| S31621A | Laceration with foreign body of abdominal wall, left upper quadrant with penetration into peritoneal cavity, initial encounter |
| S31622A | Laceration with foreign body of abdominal wall, epigastric region with penetration into peritoneal cavity, initial encounter |
| S31623A | Laceration with foreign body of abdominal wall, right lower quadrant with penetration into peritoneal cavity, initial encounter |
| S31624A | Laceration with foreign body of abdominal wall, left lower quadrant with penetration into peritoneal cavity, initial encounter |
| S31625A | Laceration with foreign body of abdominal wall, periumbilic region with penetration into peritoneal cavity, initial encounter |
| S31629A | Laceration with foreign body of abdominal wall, unspecified quadrant with penetration into peritoneal cavity, initial encounter |
| S31630A | Puncture wound without foreign body of abdominal wall, right upper quadrant with penetration into peritoneal cavity, initial encounter |
| S31631A | Puncture wound without foreign body of abdominal wall, left upper quadrant with penetration into peritoneal cavity, initial encounter |
| S31632A | Puncture wound without foreign body of abdominal wall, epigastric region with penetration into peritoneal cavity, initial encounter |
| S31633A | Puncture wound without foreign body of abdominal wall, right lower quadrant with penetration into peritoneal cavity, initial encounter |
| S31634A | Puncture wound without foreign body of abdominal wall, left lower quadrant with penetration into peritoneal cavity, initial encounter |
| S31635A | Puncture wound without foreign body of abdominal wall, periumbilic region with penetration into peritoneal cavity, initial encounter |
| S31639A | Puncture wound without foreign body of abdominal wall, unspecified quadrant with penetration into peritoneal cavity, initial encounter |
| S31640A | Puncture wound with foreign body of abdominal wall, right upper quadrant with penetration into peritoneal cavity, initial encounter |
| S31641A | Puncture wound with foreign body of abdominal wall, left upper quadrant with penetration into peritoneal cavity, initial encounter |
| S31642A | Puncture wound with foreign body of abdominal wall, epigastric region with penetration into peritoneal cavity, initial encounter |
| S31643A | Puncture wound with foreign body of abdominal wall, right lower quadrant with penetration into peritoneal cavity, initial encounter |
| S31644A | Puncture wound with foreign body of abdominal wall, left lower quadrant with penetration into peritoneal cavity, initial encounter |
| S31645A | Puncture wound with foreign body of abdominal wall, periumbilic region with penetration into peritoneal cavity, initial encounter |
| S31649A | Puncture wound with foreign body of abdominal wall, unspecified quadrant with penetration into peritoneal cavity, initial encounter |
| S31650A | Open bite of abdominal wall, right upper quadrant with penetration into peritoneal cavity, initial encounter |
| S31651A | Open bite of abdominal wall, left upper quadrant with penetration into peritoneal cavity, initial encounter |
| S31652A | Open bite of abdominal wall, epigastric region with penetration into peritoneal cavity, initial encounter |
| S31653A | Open bite of abdominal wall, right lower quadrant with penetration into peritoneal cavity, initial encounter |
| S31654A | Open bite of abdominal wall, left lower quadrant with penetration into peritoneal cavity, initial encounter |
| S31655A | Open bite of abdominal wall, periumbilic region with penetration into peritoneal cavity, initial encounter |
| S31659A | Open bite of abdominal wall, unspecified quadrant with penetration into peritoneal cavity, initial encounter |
| S3600XS | Unspecified injury of spleen, sequela |
| S36020S | Minor contusion of spleen, sequela |
| S36021S | Major contusion of spleen, sequela |
| S36029S | Unspecified contusion of spleen, sequela |
| S36030S | Superficial (capsular) laceration of spleen, sequela |
| S36031S | Moderate laceration of spleen, sequela |
| S36032S | Major laceration of spleen, sequela |
| S36039S | Unspecified laceration of spleen, sequela |
| S3609XS | Other injury of spleen, sequela |
| S36112S | Contusion of liver, sequela |
| S36113S | Laceration of liver, unspecified degree, sequela |
| S36114S | Minor laceration of liver, sequela |
| S36115S | Moderate laceration of liver, sequela |
| S36116S | Major laceration of liver, sequela |
| S36118S | Other injury of liver, sequela |
| S36119S | Unspecified injury of liver, sequela |
| S36122S | Contusion of gallbladder, sequela |
| S36123S | Laceration of gallbladder, sequela |
| S36128S | Other injury of gallbladder, sequela |
| S36129S | Unspecified injury of gallbladder, sequela |
| S3613XS | Injury of bile duct, sequela |
| S36200S | Unspecified injury of head of pancreas, sequela |
| S36201S | Unspecified injury of body of pancreas, sequela |
| S36202S | Unspecified injury of tail of pancreas, sequela |
| S36209S | Unspecified injury of unspecified part of pancreas, sequela |
| S36220S | Contusion of head of pancreas, sequela |
| S36221S | Contusion of body of pancreas, sequela |
| S36222S | Contusion of tail of pancreas, sequela |
| S36229S | Contusion of unspecified part of pancreas, sequela |
| S36230S | Laceration of head of pancreas, unspecified degree, sequela |
| S36231S | Laceration of body of pancreas, unspecified degree, sequela |
| S36232S | Laceration of tail of pancreas, unspecified degree, sequela |
| S36239S | Laceration of unspecified part of pancreas, unspecified degree, sequela |
| S36240S | Minor laceration of head of pancreas, sequela |
| S36241S | Minor laceration of body of pancreas, sequela |
| S36242S | Minor laceration of tail of pancreas, sequela |
| S36249S | Minor laceration of unspecified part of pancreas, sequela |
| S36250S | Moderate laceration of head of pancreas, sequela |
| S36251S | Moderate laceration of body of pancreas, sequela |
| S36252S | Moderate laceration of tail of pancreas, sequela |
| S36259S | Moderate laceration of unspecified part of pancreas, sequela |
| S36260S | Major laceration of head of pancreas, sequela |
| S36261S | Major laceration of body of pancreas, sequela |
| S36262S | Major laceration of tail of pancreas, sequela |
| S36269S | Major laceration of unspecified part of pancreas, sequela |
| S36290S | Other injury of head of pancreas, sequela |
| S36291S | Other injury of body of pancreas, sequela |
| S36292S | Other injury of tail of pancreas, sequela |
| S36299S | Other injury of unspecified part of pancreas, sequela |
| S3630XA | Unspecified injury of stomach, initial encounter |
| S3630XS | Unspecified injury of stomach, sequela |
| S3632XA | Contusion of stomach, initial encounter |
| S3632XS | Contusion of stomach, sequela |
| S3633XA | Laceration of stomach, initial encounter |
| S3633XS | Laceration of stomach, sequela |
| S3639XA | Other injury of stomach, initial encounter |
| S3639XS | Other injury of stomach, sequela |
| S36400A | Unspecified injury of duodenum, initial encounter |
| S36400S | Unspecified injury of duodenum, sequela |
| S36408A | Unspecified injury of other part of small intestine, initial encounter |
| S36408S | Unspecified injury of other part of small intestine, sequela |
| S36409A | Unspecified injury of unspecified part of small intestine, initial encounter |
| S36409S | Unspecified injury of unspecified part of small intestine, sequela |
| S36410A | Primary blast injury of duodenum, initial encounter |
| S36410S | Primary blast injury of duodenum, sequela |
| S36418A | Primary blast injury of other part of small intestine, initial encounter |
| S36418S | Primary blast injury of other part of small intestine, sequela |
| S36419A | Primary blast injury of unspecified part of small intestine, initial encounter |
| S36419S | Primary blast injury of unspecified part of small intestine, sequela |
| S36420A | Contusion of duodenum, initial encounter |
| S36420S | Contusion of duodenum, sequela |
| S36428A | Contusion of other part of small intestine, initial encounter |
| S36428S | Contusion of other part of small intestine, sequela |
| S36429A | Contusion of unspecified part of small intestine, initial encounter |
| S36429S | Contusion of unspecified part of small intestine, sequela |
| S36430A | Laceration of duodenum, initial encounter |
| S36430S | Laceration of duodenum, sequela |
| S36438A | Laceration of other part of small intestine, initial encounter |
| S36438S | Laceration of other part of small intestine, sequela |
| S36439A | Laceration of unspecified part of small intestine, initial encounter |
| S36439S | Laceration of unspecified part of small intestine, sequela |
| S36490A | Other injury of duodenum, initial encounter |
| S36490S | Other injury of duodenum, sequela |
| S36498A | Other injury of other part of small intestine, initial encounter |
| S36498S | Other injury of other part of small intestine, sequela |
| S36499A | Other injury of unspecified part of small intestine, initial encounter |
| S36499S | Other injury of unspecified part of small intestine, sequela |
| S36500A | Unspecified injury of ascending [right] colon, initial encounter |
| S36500S | Unspecified injury of ascending [right] colon, sequela |
| S36501A | Unspecified injury of transverse colon, initial encounter |
| S36501S | Unspecified injury of transverse colon, sequela |
| S36502A | Unspecified injury of descending [left] colon, initial encounter |
| S36502S | Unspecified injury of descending [left] colon, sequela |
| S36503A | Unspecified injury of sigmoid colon, initial encounter |
| S36503S | Unspecified injury of sigmoid colon, sequela |
| S36508A | Unspecified injury of other part of colon, initial encounter |
| S36508S | Unspecified injury of other part of colon, sequela |
| S36509A | Unspecified injury of unspecified part of colon, initial encounter |
| S36509S | Unspecified injury of unspecified part of colon, sequela |
| S36510A | Primary blast injury of ascending [right] colon, initial encounter |
| S36510S | Primary blast injury of ascending [right] colon, sequela |
| S36511A | Primary blast injury of transverse colon, initial encounter |
| S36511S | Primary blast injury of transverse colon, sequela |
| S36512A | Primary blast injury of descending [left] colon, initial encounter |
| S36512S | Primary blast injury of descending [left] colon, sequela |
| S36513A | Primary blast injury of sigmoid colon, initial encounter |
| S36513S | Primary blast injury of sigmoid colon, sequela |
| S36518A | Primary blast injury of other part of colon, initial encounter |
| S36518S | Primary blast injury of other part of colon, sequela |
| S36519A | Primary blast injury of unspecified part of colon, initial encounter |
| S36519S | Primary blast injury of unspecified part of colon, sequela |
| S36520A | Contusion of ascending [right] colon, initial encounter |
| S36520S | Contusion of ascending [right] colon, sequela |
| S36521A | Contusion of transverse colon, initial encounter |
| S36521S | Contusion of transverse colon, sequela |
| S36522A | Contusion of descending [left] colon, initial encounter |
| S36522S | Contusion of descending [left] colon, sequela |
| S36523A | Contusion of sigmoid colon, initial encounter |
| S36523S | Contusion of sigmoid colon, sequela |
| S36528A | Contusion of other part of colon, initial encounter |
| S36528S | Contusion of other part of colon, sequela |
| S36529A | Contusion of unspecified part of colon, initial encounter |
| S36529S | Contusion of unspecified part of colon, sequela |
| S36530A | Laceration of ascending [right] colon, initial encounter |
| S36530S | Laceration of ascending [right] colon, sequela |
| S36531A | Laceration of transverse colon, initial encounter |
| S36531S | Laceration of transverse colon, sequela |
| S36532A | Laceration of descending [left] colon, initial encounter |
| S36532S | Laceration of descending [left] colon, sequela |
| S36533A | Laceration of sigmoid colon, initial encounter |
| S36533S | Laceration of sigmoid colon, sequela |
| S36538A | Laceration of other part of colon, initial encounter |
| S36538S | Laceration of other part of colon, sequela |
| S36539A | Laceration of unspecified part of colon, initial encounter |
| S36539S | Laceration of unspecified part of colon, sequela |
| S36590A | Other injury of ascending [right] colon, initial encounter |
| S36590S | Other injury of ascending [right] colon, sequela |
| S36591A | Other injury of transverse colon, initial encounter |
| S36591S | Other injury of transverse colon, sequela |
| S36592A | Other injury of descending [left] colon, initial encounter |
| S36592S | Other injury of descending [left] colon, sequela |
| S36593A | Other injury of sigmoid colon, initial encounter |
| S36593S | Other injury of sigmoid colon, sequela |
| S36598A | Other injury of other part of colon, initial encounter |
| S36598S | Other injury of other part of colon, sequela |
| S36599A | Other injury of unspecified part of colon, initial encounter |
| S36599S | Other injury of unspecified part of colon, sequela |
| S3660XA | Unspecified injury of rectum, initial encounter |
| S3660XS | Unspecified injury of rectum, sequela |
| S3661XA | Primary blast injury of rectum, initial encounter |
| S3661XS | Primary blast injury of rectum, sequela |
| S3662XA | Contusion of rectum, initial encounter |
| S3662XS | Contusion of rectum, sequela |
| S3663XA | Laceration of rectum, initial encounter |
| S3663XS | Laceration of rectum, sequela |
| S3669XA | Other injury of rectum, initial encounter |
| S3669XS | Other injury of rectum, sequela |
| S3681XA | Injury of peritoneum, initial encounter |
| S3681XS | Injury of peritoneum, sequela |
| S36892S | Contusion of other intra-abdominal organs, sequela |
| S36893S | Laceration of other intra-abdominal organs, sequela |
| S36898S | Other injury of other intra-abdominal organs, sequela |
| S36899S | Unspecified injury of other intra-abdominal organs, sequela |
| S3690XA | Unspecified injury of unspecified intra-abdominal organ, initial encounter |
| S3690XS | Unspecified injury of unspecified intra-abdominal organ, sequela |
| S3692XA | Contusion of unspecified intra-abdominal organ, initial encounter |
| S3692XS | Contusion of unspecified intra-abdominal organ, sequela |
| S3693XA | Laceration of unspecified intra-abdominal organ, initial encounter |
| S3693XS | Laceration of unspecified intra-abdominal organ, sequela |
| S3699XA | Other injury of unspecified intra-abdominal organ, initial encounter |
| S3699XS | Other injury of unspecified intra-abdominal organ, sequela |
| S37001S | Unspecified injury of right kidney, sequela |
| S37002S | Unspecified injury of left kidney, sequela |
| S37009S | Unspecified injury of unspecified kidney, sequela |
| S37011S | Minor contusion of right kidney, sequela |
| S37012S | Minor contusion of left kidney, sequela |
| S37019S | Minor contusion of unspecified kidney, sequela |
| S37021S | Major contusion of right kidney, sequela |
| S37022S | Major contusion of left kidney, sequela |
| S37029S | Major contusion of unspecified kidney, sequela |
| S37031S | Laceration of right kidney, unspecified degree, sequela |
| S37032S | Laceration of left kidney, unspecified degree, sequela |
| S37039S | Laceration of unspecified kidney, unspecified degree, sequela |
| S37041S | Minor laceration of right kidney, sequela |
| S37042S | Minor laceration of left kidney, sequela |
| S37049S | Minor laceration of unspecified kidney, sequela |
| S37051S | Moderate laceration of right kidney, sequela |
| S37052S | Moderate laceration of left kidney, sequela |
| S37059S | Moderate laceration of unspecified kidney, sequela |
| S37061S | Major laceration of right kidney, sequela |
| S37062S | Major laceration of left kidney, sequela |
| S37069S | Major laceration of unspecified kidney, sequela |
| S37091S | Other injury of right kidney, sequela |
| S37092S | Other injury of left kidney, sequela |
| S37099S | Other injury of unspecified kidney, sequela |
| T18100A | Unspecified foreign body in esophagus causing compression of trachea, initial encounter |
| T18108A | Unspecified foreign body in esophagus causing other injury, initial encounter |
| T18110A | Gastric contents in esophagus causing compression of trachea, initial encounter |
| T18118A | Gastric contents in esophagus causing other injury, initial encounter |
| T18120A | Food in esophagus causing compression of trachea, initial encounter |
| T18128A | Food in esophagus causing other injury, initial encounter |
| T18190A | Other foreign object in esophagus causing compression of trachea, initial encounter |
| T18198A | Other foreign object in esophagus causing other injury, initial encounter |
| T182XXA | Foreign body in stomach, initial encounter |
| T183XXA | Foreign body in small intestine, initial encounter |
| T184XXA | Foreign body in colon, initial encounter |
| T185XXA | Foreign body in anus and rectum, initial encounter |
| T188XXA | Foreign body in other parts of alimentary tract, initial encounter |
| T189XXA | Foreign body of alimentary tract, part unspecified, initial encounter |
| T281XXA | Burn of esophagus, initial encounter |
| T282XXA | Burn of other parts of alimentary tract, initial encounter |
| T286XXA | Corrosion of esophagus, initial encounter |
| T287XXA | Corrosion of other parts of alimentary tract, initial encounter |
| T81710A | Complication of mesenteric artery following a procedure, not elsewhere classified, initial encounter |
| Z431 | Encounter for attention to gastrostomy |
| Z432 | Encounter for attention to ileostomy |
| Z433 | Encounter for attention to colostomy |
| Z434 | Encounter for attention to other artificial openings of digestive tract |
| Z4651 | Encounter for fitting and adjustment of gastric lap band |
| Z4659 | Encounter for fitting and adjustment of other gastrointestinal appliance and device |
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