ICD-10-CM 2027 diagnosis code

K55.2Angiodysplasia of colon

Not billable — use a more specific code

K55.2 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About K55.2

K55.2 is the ICD-10-CM diagnosis code for Angiodysplasia of colon. It belongs to category K55 (vascular disorders of intestine), block K55-K64 (other diseases of intestines) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within K55 (vascular disorders of intestine), K55.2 is specifically for Angiodysplasia of colon. Related codes cover acute vascular disorders of intestine (K55.0), chronic vascular disorders of intestine (K55.1), necrotizing enterocolitis (K55.3), other vascular disorders of intestine (K55.8) and vascular disorder of intestine, unspecified (K55.9).

To report this condition, pick the subcode that matches the documentation: K55.20 (without hemorrhage) and K55.21 (with hemorrhage).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under K55.2

Notes that apply from higher levels

Instructions written at a parent level also apply to K55.2.

› From K55 Vascular disorders of intestine

Excludes1

necrotizing enterocolitis of newborn (P77.-)

Excludes2

angioectasia (angiodysplasia) duodenum (K31.81-)

Broader instructions also apply from Chapter 11: Diseases of the digestive system.

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about K55.2

Is K55.2 billable?: No. K55.2 is a header code. Report one of its more specific subcodes instead.