ICD-10-CM 2027 diagnosis code

K90Intestinal malabsorption

Not billable — use a more specific code

K90 is a header code, so it can't be reported by itself. Choose one of the 7 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 K90

K90 is the ICD-10-CM diagnosis code for intestinal malabsorption. It belongs to block K90-K95 (other diseases of the digestive system) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 7 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: K90.0 (disease), K90.1 (sprue), K90.2 (classified), K90.3 (steatorrhea), K90.4 (intolerance), K90.8 (malabsorption) and K90.9 (unspecified).

Don't report K90 together with the conditions in its Excludes1 note: intestinal malabsorption following gastrointestinal surgery (K91.2).

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 K90

Coding notes

Excludes1Not coded here — never report together with this code

intestinal malabsorption following gastrointestinal surgery (K91.2)

Notes that apply from higher levels

Instructions written at a parent level also apply to K90.

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

Codes whose notes reference K90

K59Excludes1

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 K90

Is K90 billable?: No. K90 is a header code. Report one of its more specific subcodes instead.