ICD-10 · PDGM grouping

K50-K52 — Noninfective enteritis and colitis

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

No clinical group

A period cannot be grouped from these.

Barred as primary

CMS rejects these in the primary position.

Where these codes group

70 of the 91 codes in K50-K52 group to MMTA - Gastrointestinal tract and Genitourinary system, but the range is not uniform — it spreads across 2 clinical groups. A further 11 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.

Every code in K50-K52

Descriptions are CMS’s own, abbreviated as CMS abbreviates them.

Code	Description	Clinical group	Primary position
K5000	Crohn's disease of small intestine without complications	J	Accepted
K50011	Crohn's disease of small intestine with rectal bleeding	J	Accepted
K50012	Crohn's disease of small intestine w intestinal obstruction	J	Accepted
K50013	Crohn's disease of small intestine with fistula	J	Accepted
K50014	Crohn's disease of small intestine with abscess	J	Accepted
K50018	Crohn's disease of small intestine with other complication	J	Accepted
K50019	Crohn's disease of small intestine with unsp complications	None	Cannot group
K5010	Crohn's disease of large intestine without complications	J	Accepted
K50111	Crohn's disease of large intestine with rectal bleeding	J	Accepted
K50112	Crohn's disease of large intestine w intestinal obstruction	J	Accepted
K50113	Crohn's disease of large intestine with fistula	J	Accepted
K50114	Crohn's disease of large intestine with abscess	J	Accepted
K50118	Crohn's disease of large intestine with other complication	J	Accepted
K50119	Crohn's disease of large intestine with unsp complications	None	Cannot group
K5080	Crohn's disease of both small and lg int w/o complications	J	Accepted
K50811	Crohn's disease of both small and lg int w rectal bleeding	J	Accepted
K50812	Crohn's disease of both small and lg int w intestinal obst	J	Accepted
K50813	Crohn's disease of both small and large intestine w fistula	J	Accepted
K50814	Crohn's disease of both small and large intestine w abscess	A	Accepted
K50818	Crohn's disease of both small and lg int w oth complication	J	Accepted
K50819	Crohn's disease of both small and lg int w unsp comp	None	Cannot group
K5090	Crohn's disease, unspecified, without complications	J	Accepted
K50911	Crohn's disease, unspecified, with rectal bleeding	J	Accepted
K50912	Crohn's disease, unspecified, with intestinal obstruction	J	Accepted
K50913	Crohn's disease, unspecified, with fistula	J	Accepted
K50914	Crohn's disease, unspecified, with abscess	J	Accepted
K50918	Crohn's disease, unspecified, with other complication	J	Accepted
K50919	Crohn's disease, unspecified, with unspecified complications	None	Cannot group
K5100	Ulcerative (chronic) pancolitis without complications	J	Accepted
K51011	Ulcerative (chronic) pancolitis with rectal bleeding	J	Accepted
K51012	Ulcerative (chronic) pancolitis with intestinal obstruction	J	Accepted
K51013	Ulcerative (chronic) pancolitis with fistula	J	Accepted
K51014	Ulcerative (chronic) pancolitis with abscess	J	Accepted
K51018	Ulcerative (chronic) pancolitis with other complication	J	Accepted
K51019	Ulcerative (chronic) pancolitis with unsp complications	None	Cannot group
K5120	Ulcerative (chronic) proctitis without complications	J	Accepted
K51211	Ulcerative (chronic) proctitis with rectal bleeding	J	Accepted
K51212	Ulcerative (chronic) proctitis with intestinal obstruction	J	Accepted
K51213	Ulcerative (chronic) proctitis with fistula	A	Accepted
K51214	Ulcerative (chronic) proctitis with abscess	J	Accepted
K51218	Ulcerative (chronic) proctitis with other complication	J	Accepted
K51219	Ulcerative (chronic) proctitis with unsp complications	None	Cannot group
K5130	Ulcerative (chronic) rectosigmoiditis without complications	J	Accepted
K51311	Ulcerative (chronic) rectosigmoiditis with rectal bleeding	J	Accepted
K51312	Ulcerative (chronic) rectosigmoiditis w intestinal obst	J	Accepted
K51313	Ulcerative (chronic) rectosigmoiditis with fistula	J	Accepted
K51314	Ulcerative (chronic) rectosigmoiditis with abscess	J	Accepted
K51318	Ulcerative (chronic) rectosigmoiditis with oth complication	A	Accepted
K51319	Ulcerative (chronic) rectosigmoiditis w unsp complications	None	Cannot group
K5140	Inflammatory polyps of colon without complications	J	Accepted
K51411	Inflammatory polyps of colon with rectal bleeding	J	Accepted
K51412	Inflammatory polyps of colon with intestinal obstruction	A	Accepted
K51413	Inflammatory polyps of colon with fistula	A	Accepted
K51414	Inflammatory polyps of colon with abscess	J	Accepted
K51418	Inflammatory polyps of colon with other complication	J	Accepted
K51419	Inflammatory polyps of colon with unspecified complications	None	Cannot group
K5150	Left sided colitis without complications	J	Accepted
K51511	Left sided colitis with rectal bleeding	J	Accepted
K51512	Left sided colitis with intestinal obstruction	J	Accepted
K51513	Left sided colitis with fistula	A	Accepted
K51514	Left sided colitis with abscess	J	Accepted
K51518	Left sided colitis with other complication	J	Accepted
K51519	Left sided colitis with unspecified complications	None	Cannot group
K5180	Other ulcerative colitis without complications	J	Accepted
K51811	Other ulcerative colitis with rectal bleeding	J	Accepted
K51812	Other ulcerative colitis with intestinal obstruction	J	Accepted
K51813	Other ulcerative colitis with fistula	A	Accepted
K51814	Other ulcerative colitis with abscess	J	Accepted
K51818	Other ulcerative colitis with other complication	J	Accepted
K51819	Other ulcerative colitis with unspecified complications	None	Cannot group
K5190	Ulcerative colitis, unspecified, without complications	J	Accepted
K51911	Ulcerative colitis, unspecified with rectal bleeding	J	Accepted
K51912	Ulcerative colitis, unspecified with intestinal obstruction	J	Accepted
K51913	Ulcerative colitis, unspecified with fistula	J	Accepted
K51914	Ulcerative colitis, unspecified with abscess	J	Accepted
K51918	Ulcerative colitis, unspecified with other complication	J	Accepted
K51919	Ulcerative colitis, unsp with unspecified complications	None	Cannot group
K520	Gastroenteritis and colitis due to radiation	J	Accepted
K521	Toxic gastroenteritis and colitis	J	Accepted
K5221	Food protein-induced enterocolitis syndrome	A	Accepted
K5222	Food protein-induced enteropathy	A	Accepted
K5229	Other allergic and dietetic gastroenteritis and colitis	J	Accepted
K523	Indeterminate colitis	J	Accepted
K5281	Eosinophilic gastritis or gastroenteritis	J	Accepted
K5282	Eosinophilic colitis	J	Accepted
K52831	Collagenous colitis	J	Accepted
K52832	Lymphocytic colitis	J	Accepted
K52838	Other microscopic colitis	A	Accepted
K52839	Microscopic colitis, unspecified	J	Accepted
K5289	Other specified noninfective gastroenteritis and colitis	J	Accepted
K529	Noninfective gastroenteritis and colitis, 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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K50-K52 — Noninfective enteritis and colitis

Where these codes group

Every code in K50-K52

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