ICD-10-CM 2027 diagnosis code

H57.0Anomalies of pupillary function

Not billable — use a more specific code

H57.0 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 H57.0

H57.0 is the ICD-10-CM diagnosis code for anomalies of pupillary function. It belongs to category H57 (other disorders of eye and adnexa), block H55-H57 (other disorders of eye and adnexa) and chapter 7 (diseases of the eye and adnexa). It is a header code, so it can't be reported by itself; one of its 7 subcodes must be used instead.

Within H57 (other disorders of eye and adnexa), H57.0 is specifically for anomalies of pupillary function. Related codes cover ocular pain (H57.1), other specified disorders of eye and adnexa (H57.8) and unspecified disorder of eye and adnexa (H57.9).

To report this condition, pick the subcode that matches the documentation: H57.00 (function), H57.01 (atypical), H57.02 (Anisocoria), H57.03 (Miosis), H57.04 (Mydriasis), H57.05 (pupil) and H57.09 (function).

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 H57.0

Notes that apply from higher levels

Instructions written at a parent level also apply to H57.0.

Broader instructions also apply from Chapter 7: Diseases of the eye and adnexa.

Codes whose notes reference H57.0

R29.2Excludes2

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 H57.0

Is H57.0 billable?: No. H57.0 is a header code. Report one of its more specific subcodes instead.