ICD-10 · PDGM grouping
K20-K31 — Diseases of esophagus, stomach and duodenum
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.2.26.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in range
106
No clinical group
3
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
99 of the 106 codes in K20-K31 group to MMTA - Gastrointestinal tract and Genitourinary system, but the range is not uniform — it spreads across 2 clinical groups. A further 3 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Code families in K20-K31
One page per three-character family: every code in it, whether it can lead a claim, its clinical group and comorbidity subgroup.
- K20Esophagitis5 codes
- K21Gastro-esophageal reflux disease3 codes
- K22Other diseases of esophagus16 codes
- K23Disorders of esophagus in diseases classified elsewhere1 code
- K25Gastric ulcer9 codes
- K26Duodenal ulcer9 codes
- K27Peptic ulcer, site unspecified9 codes
- K28Gastrojejunal ulcer9 codes
- K29Gastritis and duodenitis18 codes
- K30Functional dyspepsia1 code
- K31Other diseases of stomach and duodenum26 codes
Every code in K20-K31
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| K200 | Eosinophilic esophagitis | J | Can lead a claim |
| K2080 | Other esophagitis without bleeding | J | Can lead a claim |
| K2081 | Other esophagitis with bleeding | J | Can lead a claim |
| K2090 | Esophagitis, unspecified without bleeding | J | Can lead a claim |
| K2091 | Esophagitis, unspecified with bleeding | J | Can lead a claim |
| K2100 | Gastro-esophageal reflux dis with esophagitis, without bleed | J | Can lead a claim |
| K2101 | Gastro-esophageal reflux dis with esophagitis, with bleed | J | Can lead a claim |
| K219 | Gastro-esophageal reflux disease without esophagitis | J | Can lead a claim |
| K220 | Achalasia of cardia | J | Can lead a claim |
| K2210 | Ulcer of esophagus without bleeding | J | Can lead a claim, code first applies |
| K2211 | Ulcer of esophagus with bleeding | J | Can lead a claim, code first applies |
| K222 | Esophageal obstruction | J | Can lead a claim |
| K223 | Perforation of esophagus | J | Can lead a claim |
| K224 | Dyskinesia of esophagus | J | Can lead a claim |
| K225 | Diverticulum of esophagus, acquired | J | Can lead a claim |
| K226 | Gastro-esophageal laceration-hemorrhage syndrome | J | Can lead a claim |
| K2270 | Barrett's esophagus without dysplasia | J | Can lead a claim |
| K22710 | Barrett's esophagus with low grade dysplasia | J | Can lead a claim |
| K22711 | Barrett's esophagus with high grade dysplasia | J | Can lead a claim |
| K22719 | Barrett's esophagus with dysplasia, unspecified | J | Can lead a claim |
| K2281 | Esophageal polyp | J | Can lead a claim |
| K2282 | Esophagogastric junction polyp | J | Can lead a claim |
| K2289 | Other specified disease of esophagus | J | Can lead a claim |
| K229 | Disease of esophagus, unspecified | None | Cannot lead a claim |
| K23 | Disorders of esophagus in diseases classified elsewhere | None | Cannot lead a claim |
| K250 | Acute gastric ulcer with hemorrhage | J | Can lead a claim |
| K251 | Acute gastric ulcer with perforation | J | Can lead a claim |
| K252 | Acute gastric ulcer with both hemorrhage and perforation | J | Can lead a claim |
| K253 | Acute gastric ulcer without hemorrhage or perforation | J | Can lead a claim |
| K254 | Chronic or unspecified gastric ulcer with hemorrhage | J | Can lead a claim |
| K255 | Chronic or unspecified gastric ulcer with perforation | J | Can lead a claim |
| K256 | Chronic or unsp gastric ulcer w both hemorrhage and perf | J | Can lead a claim |
| K257 | Chronic gastric ulcer without hemorrhage or perforation | J | Can lead a claim |
| K259 | Gastric ulcer, unsp as acute or chronic, w/o hemor or perf | J | Can lead a claim |
| K260 | Acute duodenal ulcer with hemorrhage | J | Can lead a claim |
| K261 | Acute duodenal ulcer with perforation | J | Can lead a claim |
| K262 | Acute duodenal ulcer with both hemorrhage and perforation | J | Can lead a claim |
| K263 | Acute duodenal ulcer without hemorrhage or perforation | J | Can lead a claim |
| K264 | Chronic or unspecified duodenal ulcer with hemorrhage | J | Can lead a claim |
| K265 | Chronic or unspecified duodenal ulcer with perforation | J | Can lead a claim |
| K266 | Chronic or unsp duodenal ulcer w both hemorrhage and perf | J | Can lead a claim |
| K267 | Chronic duodenal ulcer without hemorrhage or perforation | J | Can lead a claim |
| K269 | Duodenal ulcer, unsp as acute or chronic, w/o hemor or perf | J | Can lead a claim |
| K270 | Acute peptic ulcer, site unspecified, with hemorrhage | J | Can lead a claim |
| K271 | Acute peptic ulcer, site unspecified, with perforation | J | Can lead a claim |
| K272 | Acute peptic ulcer, site unsp, w both hemorrhage and perf | J | Can lead a claim |
| K273 | Acute peptic ulcer, site unsp, w/o hemorrhage or perforation | J | Can lead a claim |
| K274 | Chronic or unsp peptic ulcer, site unsp, with hemorrhage | J | Can lead a claim |
| K275 | Chronic or unsp peptic ulcer, site unsp, with perforation | J | Can lead a claim |
| K276 | Chr or unsp peptic ulcer, site unsp, w both hemor and perf | J | Can lead a claim |
| K277 | Chronic peptic ulcer, site unsp, w/o hemorrhage or perf | J | Can lead a claim |
| K279 | Peptic ulc, site unsp, unsp as ac or chr, w/o hemor or perf | J | Can lead a claim |
| K280 | Acute gastrojejunal ulcer with hemorrhage | J | Can lead a claim |
| K281 | Acute gastrojejunal ulcer with perforation | J | Can lead a claim |
| K282 | Acute gastrojejunal ulcer w both hemorrhage and perforation | A | Can lead a claim |
| K283 | Acute gastrojejunal ulcer without hemorrhage or perforation | J | Can lead a claim |
| K284 | Chronic or unspecified gastrojejunal ulcer with hemorrhage | J | Can lead a claim |
| K285 | Chronic or unspecified gastrojejunal ulcer with perforation | J | Can lead a claim |
| K286 | Chronic or unsp gastrojejunal ulcer w both hemor and perf | A | Can lead a claim |
| K287 | Chronic gastrojejunal ulcer w/o hemorrhage or perforation | J | Can lead a claim |
| K289 | Gastrojejunal ulcer, unsp as acute or chr, w/o hemor or perf | J | Can lead a claim |
| K2900 | Acute gastritis without bleeding | J | Can lead a claim |
| K2901 | Acute gastritis with bleeding | J | Can lead a claim |
| K2920 | Alcoholic gastritis without bleeding | J | Can lead a claim |
| K2921 | Alcoholic gastritis with bleeding | J | Can lead a claim |
| K2930 | Chronic superficial gastritis without bleeding | J | Can lead a claim |
| K2931 | Chronic superficial gastritis with bleeding | J | Can lead a claim |
| K2940 | Chronic atrophic gastritis without bleeding | J | Can lead a claim |
| K2941 | Chronic atrophic gastritis with bleeding | J | Can lead a claim |
| K2950 | Unspecified chronic gastritis without bleeding | J | Can lead a claim |
| K2951 | Unspecified chronic gastritis with bleeding | J | Can lead a claim |
| K2960 | Other gastritis without bleeding | J | Can lead a claim |
| K2961 | Other gastritis with bleeding | J | Can lead a claim |
| K2970 | Gastritis, unspecified, without bleeding | J | Can lead a claim |
| K2971 | Gastritis, unspecified, with bleeding | J | Can lead a claim |
| K2980 | Duodenitis without bleeding | J | Can lead a claim |
| K2981 | Duodenitis with bleeding | J | Can lead a claim |
| K2990 | Gastroduodenitis, unspecified, without bleeding | J | Can lead a claim |
| K2991 | Gastroduodenitis, unspecified, with bleeding | J | Can lead a claim |
| K30 | Functional dyspepsia | J | Can lead a claim |
| K310 | Acute dilatation of stomach | A | Can lead a claim |
| K311 | Adult hypertrophic pyloric stenosis | J | Can lead a claim |
| K312 | Hourglass stricture and stenosis of stomach | J | Can lead a claim |
| K313 | Pylorospasm, not elsewhere classified | J | Can lead a claim |
| K314 | Gastric diverticulum | J | Can lead a claim |
| K315 | Obstruction of duodenum | J | Can lead a claim |
| K316 | Fistula of stomach and duodenum | J | Can lead a claim |
| K317 | Polyp of stomach and duodenum | J | Can lead a claim |
| K31811 | Angiodysplasia of stomach and duodenum with bleeding | J | Can lead a claim |
| K31819 | Angiodysplasia of stomach and duodenum without bleeding | J | Can lead a claim |
| K3182 | Dieulafoy lesion (hemorrhagic) of stomach and duodenum | J | Can lead a claim |
| K3183 | Achlorhydria | A | Can lead a claim |
| K3184 | Gastroparesis | J | Can lead a claim, code first applies |
| K3189 | Other diseases of stomach and duodenum | J | Can lead a claim |
| K319 | Disease of stomach and duodenum, unspecified | None | Cannot lead a claim |
| K31A0 | Gastric intestinal metaplasia, unspecified | J | Can lead a claim |
| K31A11 | Gastric intestnl metaplasia without dysplasia, w the antrum | J | Can lead a claim |
| K31A12 | Gastr intestnl metaplasia w/o dysplasia, w the body (corpus) | J | Can lead a claim |
| K31A13 | Gastric intestnl metaplasia without dysplasia, w the fundus | J | Can lead a claim |
| K31A14 | Gastric intestnl metaplasia without dysplasia, w the cardia | J | Can lead a claim |
| K31A15 | Gastric intestnl metaplasia without dysplasia, w mult sites | J | Can lead a claim |
| K31A19 | Gastric intestinal metaplasia without dysplasia, unsp site | J | Can lead a claim |
| K31A21 | Gastric intestinal metaplasia with low grade dysplasia | J | Can lead a claim |
| K31A22 | Gastric intestinal metaplasia with high grade dysplasia | J | Can lead a claim |
| K31A29 | Gastric intestinal metaplasia with dysplasia, unspecified | J | Can lead a claim |
| K31B | Hypertrophic pyloric stenosis, in childhood | J | Can lead a claim |
Source: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01. 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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