ICD-10-CM 2027
ICD-10 code for eye disease
From the official ICD-10-CM alphabetic index entry “Disease, diseased › eye”. Page updated September 29, 2026.
About coding eye disease
The ICD-10-CM code for eye disease is H57.9 (Unspecified disorder of eye and adnexa). The official index lists 4 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on H57.9.
Within H57, choose H57.9 (Unspecified disorder of eye and adnexa) only when documentation doesn't support a more specific option: anomalies of pupillary function (H57.0), ocular pain (H57.1) and other specified disorders of eye and adnexa (H57.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), in MDC 02 (Diseases and Disorders of the Eye), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific eye disease codes (official index)
Common questions about eye disease ICD-10 codes
What is the ICD-10 code for eye disease?
- H57.9 — Unspecified disorder of eye and adnexa. More specific codes apply when the documentation supports them: H21.9, H57.89, H57.89, H05.83.
What is the ICD-10 code for anterior chamber eye disease?
- H21.9 — Unspecified disorder of iris and ciliary body.
What is the ICD-10 code for inflammatory nec eye disease?
- H57.89 — Other specified disorders of eye and adnexa.
What is the ICD-10 code for thyroid eye disease?
- H05.83 — Thyroid orbitopathy (header code; choose a more specific subcode).
Is H57.9 billable?
- Yes. H57.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H57.9 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is H57.9 a CC or MCC?
- No. H57.9 is neither a CC nor an MCC under MS-DRG v44.0.