MCMCB Pro
K52

K52Other and unspecified noninfective gastroenteritis and colitis

Non-billable headerICD-10-CM

K52 is a non-billable header ICD-10-CM code for other and unspecified noninfective gastroenteritis and colitis. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with K52

These codes carry an Excludes1 note pointing at K52. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading K52 alone.

  • A09Infectious gastroenteritis and colitis, unspecified
  • K29Gastritis and duodenitis
  • K52.3Indeterminate colitis
  • T61Toxic effect of noxious substances eaten as seafood
  • T62Toxic effect of other noxious substances eaten as food
  • T66Radiation sickness, unspecified
  • T66.XXXARadiation sickness, unspecified, initial encounter
  • T66.XXXDRadiation sickness, unspecified, subsequent encounter

Risk adjustment

K52 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead K52

6 child codes. Green means billable.

Questions about K52

Is K52 a billable ICD-10-CM code?
No. K52 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does K52 sit in the tabular list?
Diseases of the digestive system (K00-K95), in the block Noninfective enteritis and colitis (K50-K52).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.