ICD-10 · PDGM grouping
K29 Gastritis and duodenitis
All 18 codes in the K29 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
18
Can lead a claim
18
Cannot lead a claim
0
What CMS assigns to K29
All 18 codes group to MMTA - Gastrointestinal tract and Genitourinary system. None of the 18 is assigned a comorbidity subgroup. Every code can lead a claim.
Every code in K29
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 |
|---|---|---|---|---|
| K29.0 Acute gastritis | ||||
| K29.00 | Acute gastritis without bleeding | Can lead a claim | J | None |
| K29.01 | Acute gastritis with bleeding | Can lead a claim | J | None |
| K29.2 Alcoholic gastritis | ||||
| K29.20 | Alcoholic gastritis without bleeding | Can lead a claim | J | None |
| K29.21 | Alcoholic gastritis with bleeding | Can lead a claim | J | None |
| K29.3 Chronic superficial gastritis | ||||
| K29.30 | Chronic superficial gastritis without bleeding | Can lead a claim | J | None |
| K29.31 | Chronic superficial gastritis with bleeding | Can lead a claim | J | None |
| K29.4 Chronic atrophic gastritis | ||||
| K29.40 | Chronic atrophic gastritis without bleeding | Can lead a claim | J | None |
| K29.41 | Chronic atrophic gastritis with bleeding | Can lead a claim | J | None |
| K29.5 Unspecified chronic gastritis | ||||
| K29.50 | Unspecified chronic gastritis without bleeding | Can lead a claim | J | None |
| K29.51 | Unspecified chronic gastritis with bleeding | Can lead a claim | J | None |
| K29.6 Other gastritis | ||||
| K29.60 | Other gastritis without bleeding | Can lead a claim | J | None |
| K29.61 | Other gastritis with bleeding | Can lead a claim | J | None |
| K29.7 Gastritis, unspecified | ||||
| K29.70 | Gastritis, unspecified, without bleeding | Can lead a claim | J | None |
| K29.71 | Gastritis, unspecified, with bleeding | Can lead a claim | J | None |
| K29.8 Duodenitis | ||||
| K29.80 | Duodenitis without bleeding | Can lead a claim | J | None |
| K29.81 | Duodenitis with bleeding | Can lead a claim | J | None |
| K29.9 Gastroduodenitis, unspecified | ||||
| K29.90 | Gastroduodenitis, unspecified, without bleeding | Can lead a claim | J | None |
| K29.91 | Gastroduodenitis, unspecified, with bleeding | Can lead a claim | J | 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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