ICD-10 · PDGM grouping
K63 Other diseases of intestine
All 14 codes in the K63 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
14
Can lead a claim
13
Cannot lead a claim
1
What CMS assigns to K63
13 of the 14 codes group to MMTA - Gastrointestinal tract and Genitourinary system; 1 is assigned no clinical group. None of the 14 is assigned a comorbidity subgroup. 13 of the 14 can lead a claim.
Every code in K63
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| K63.0 | Abscess of intestine | Can lead a claim | J | None |
| K63.1 | Perforation of intestine (nontraumatic) | Can lead a claim | J | None |
| K63.2 | Fistula of intestine | Can lead a claim | J | None |
| K63.3 | Ulcer of intestine | Can lead a claim | J | None |
| K63.4 | Enteroptosis | Can lead a claim | J | None |
| K63.5 | Polyp of colon | Can lead a claim | J | None |
| K63.8 Other specified diseases of intestine | ||||
| K63.81 | Dieulafoy lesion of intestine | Can lead a claim | J | None |
| K63.82 Intestinal microbial overgrowth | ||||
| K63.821 Small intestinal bacterial overgrowth | ||||
| K63.8211 | Small intestinal bacterial overgrowth, hydrogen-subtype | Can lead a claim | J | None |
| K63.8212 | Small intestinal bacterial overgrowth, hydrogen sulfide-subtypeCMS: Small intestnl bact overgrowth, hydrogen sulfide-subtype | Can lead a claim | J | None |
| K63.8219 | Small intestinal bacterial overgrowth, unspecified | Can lead a claim | J | None |
| K63.822 | Small intestinal fungal overgrowth | Can lead a claim | J | None |
| K63.829 | Intestinal methanogen overgrowth, unspecified | Can lead a claim | J | None |
| K63.89 | Other specified diseases of intestine | Can lead a claim | J | None |
| K63.9 | Disease of intestine, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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