ICD-10-CM 2027 diagnosis code

R27Other lack of coordination

Not billable — use a more specific code

R27 is a header code, so it can't be reported by itself. Choose one of the 3 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 R27

R27 is the ICD-10-CM diagnosis code for other lack of coordination. It belongs to block R25-R29 (symptoms and signs involving the nervous and musculoskeletal systems) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: R27.0 (unspecified), R27.8 (coordination) and R27.9 (coordination).

Don't report R27 together with the conditions in its Excludes1 note: ataxic gait (R26.0), hereditary ataxia (G11.-) and vertigo NOS (R42).

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 R27

Coding notes

Excludes1Not coded here — never report together with this code

ataxic gait (R26.0)
hereditary ataxia (G11.-)
vertigo NOS (R42)

Notes that apply from higher levels

Instructions written at a parent level also apply to R27.

Broader instructions also apply from Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.

Codes whose notes reference R27

F82Excludes1

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 R27

Is R27 billable?: No. R27 is a header code. Report one of its more specific subcodes instead.