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 v07.1.26.

OASIS-E2 v1.00.0 · ingested 2026-04-26

Codes in range

105

No clinical group

A period cannot be grouped from these.

Barred as primary

CMS rejects these in the primary position.

Where these codes group

98 of the 105 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.

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	Accepted
K2080	Other esophagitis without bleeding	J	Accepted
K2081	Other esophagitis with bleeding	J	Accepted
K2090	Esophagitis, unspecified without bleeding	J	Accepted
K2091	Esophagitis, unspecified with bleeding	J	Accepted
K2100	Gastro-esophageal reflux dis with esophagitis, without bleed	J	Accepted
K2101	Gastro-esophageal reflux dis with esophagitis, with bleed	J	Accepted
K219	Gastro-esophageal reflux disease without esophagitis	J	Accepted
K220	Achalasia of cardia	J	Accepted
K2210	Ulcer of esophagus without bleeding	J	Accepted
K2211	Ulcer of esophagus with bleeding	J	Accepted
K222	Esophageal obstruction	J	Accepted
K223	Perforation of esophagus	J	Accepted
K224	Dyskinesia of esophagus	J	Accepted
K225	Diverticulum of esophagus, acquired	J	Accepted
K226	Gastro-esophageal laceration-hemorrhage syndrome	J	Accepted
K2270	Barrett's esophagus without dysplasia	J	Accepted
K22710	Barrett's esophagus with low grade dysplasia	J	Accepted
K22711	Barrett's esophagus with high grade dysplasia	J	Accepted
K22719	Barrett's esophagus with dysplasia, unspecified	J	Accepted
K2281	Esophageal polyp	J	Accepted
K2282	Esophagogastric junction polyp	J	Accepted
K2289	Other specified disease of esophagus	J	Accepted
K229	Disease of esophagus, unspecified	None	Cannot group
K23	Disorders of esophagus in diseases classified elsewhere	None	Cannot group
K250	Acute gastric ulcer with hemorrhage	J	Accepted
K251	Acute gastric ulcer with perforation	J	Accepted
K252	Acute gastric ulcer with both hemorrhage and perforation	J	Accepted
K253	Acute gastric ulcer without hemorrhage or perforation	J	Accepted
K254	Chronic or unspecified gastric ulcer with hemorrhage	J	Accepted
K255	Chronic or unspecified gastric ulcer with perforation	J	Accepted
K256	Chronic or unsp gastric ulcer w both hemorrhage and perf	J	Accepted
K257	Chronic gastric ulcer without hemorrhage or perforation	J	Accepted
K259	Gastric ulcer, unsp as acute or chronic, w/o hemor or perf	J	Accepted
K260	Acute duodenal ulcer with hemorrhage	J	Accepted
K261	Acute duodenal ulcer with perforation	J	Accepted
K262	Acute duodenal ulcer with both hemorrhage and perforation	J	Accepted
K263	Acute duodenal ulcer without hemorrhage or perforation	J	Accepted
K264	Chronic or unspecified duodenal ulcer with hemorrhage	J	Accepted
K265	Chronic or unspecified duodenal ulcer with perforation	J	Accepted
K266	Chronic or unsp duodenal ulcer w both hemorrhage and perf	J	Accepted
K267	Chronic duodenal ulcer without hemorrhage or perforation	J	Accepted
K269	Duodenal ulcer, unsp as acute or chronic, w/o hemor or perf	J	Accepted
K270	Acute peptic ulcer, site unspecified, with hemorrhage	J	Accepted
K271	Acute peptic ulcer, site unspecified, with perforation	J	Accepted
K272	Acute peptic ulcer, site unsp, w both hemorrhage and perf	J	Accepted
K273	Acute peptic ulcer, site unsp, w/o hemorrhage or perforation	J	Accepted
K274	Chronic or unsp peptic ulcer, site unsp, with hemorrhage	J	Accepted
K275	Chronic or unsp peptic ulcer, site unsp, with perforation	J	Accepted
K276	Chr or unsp peptic ulcer, site unsp, w both hemor and perf	J	Accepted
K277	Chronic peptic ulcer, site unsp, w/o hemorrhage or perf	J	Accepted
K279	Peptic ulc, site unsp, unsp as ac or chr, w/o hemor or perf	J	Accepted
K280	Acute gastrojejunal ulcer with hemorrhage	J	Accepted
K281	Acute gastrojejunal ulcer with perforation	J	Accepted
K282	Acute gastrojejunal ulcer w both hemorrhage and perforation	A	Accepted
K283	Acute gastrojejunal ulcer without hemorrhage or perforation	J	Accepted
K284	Chronic or unspecified gastrojejunal ulcer with hemorrhage	J	Accepted
K285	Chronic or unspecified gastrojejunal ulcer with perforation	J	Accepted
K286	Chronic or unsp gastrojejunal ulcer w both hemor and perf	A	Accepted
K287	Chronic gastrojejunal ulcer w/o hemorrhage or perforation	J	Accepted
K289	Gastrojejunal ulcer, unsp as acute or chr, w/o hemor or perf	J	Accepted
K2900	Acute gastritis without bleeding	J	Accepted
K2901	Acute gastritis with bleeding	J	Accepted
K2920	Alcoholic gastritis without bleeding	J	Accepted
K2921	Alcoholic gastritis with bleeding	J	Accepted
K2930	Chronic superficial gastritis without bleeding	J	Accepted
K2931	Chronic superficial gastritis with bleeding	J	Accepted
K2940	Chronic atrophic gastritis without bleeding	J	Accepted
K2941	Chronic atrophic gastritis with bleeding	J	Accepted
K2950	Unspecified chronic gastritis without bleeding	J	Accepted
K2951	Unspecified chronic gastritis with bleeding	J	Accepted
K2960	Other gastritis without bleeding	J	Accepted
K2961	Other gastritis with bleeding	J	Accepted
K2970	Gastritis, unspecified, without bleeding	J	Accepted
K2971	Gastritis, unspecified, with bleeding	J	Accepted
K2980	Duodenitis without bleeding	J	Accepted
K2981	Duodenitis with bleeding	J	Accepted
K2990	Gastroduodenitis, unspecified, without bleeding	J	Accepted
K2991	Gastroduodenitis, unspecified, with bleeding	J	Accepted
K30	Functional dyspepsia	J	Accepted
K310	Acute dilatation of stomach	A	Accepted
K311	Adult hypertrophic pyloric stenosis	J	Accepted
K312	Hourglass stricture and stenosis of stomach	J	Accepted
K313	Pylorospasm, not elsewhere classified	J	Accepted
K314	Gastric diverticulum	J	Accepted
K315	Obstruction of duodenum	J	Accepted
K316	Fistula of stomach and duodenum	J	Accepted
K317	Polyp of stomach and duodenum	J	Accepted
K31811	Angiodysplasia of stomach and duodenum with bleeding	J	Accepted
K31819	Angiodysplasia of stomach and duodenum without bleeding	J	Accepted
K3182	Dieulafoy lesion (hemorrhagic) of stomach and duodenum	J	Accepted
K3183	Achlorhydria	A	Accepted
K3184	Gastroparesis	J	Accepted
K3189	Other diseases of stomach and duodenum	J	Accepted
K319	Disease of stomach and duodenum, unspecified	None	Cannot group
K31A0	Gastric intestinal metaplasia, unspecified	J	Accepted
K31A11	Gastric intestnl metaplasia without dysplasia, w the antrum	J	Accepted
K31A12	Gastr intestnl metaplasia w/o dysplasia, w the body (corpus)	J	Accepted
K31A13	Gastric intestnl metaplasia without dysplasia, w the fundus	J	Accepted
K31A14	Gastric intestnl metaplasia without dysplasia, w the cardia	J	Accepted
K31A15	Gastric intestnl metaplasia without dysplasia, w mult sites	J	Accepted
K31A19	Gastric intestinal metaplasia without dysplasia, unsp site	J	Accepted
K31A21	Gastric intestinal metaplasia with low grade dysplasia	J	Accepted
K31A22	Gastric intestinal metaplasia with high grade dysplasia	J	Accepted
K31A29	Gastric intestinal metaplasia with dysplasia, unspecified	J	Accepted

Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. 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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K20-K31 — Diseases of esophagus, stomach and duodenum

Where these codes group

Every code in K20-K31

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