ICD-10-CM 2027
ICD-10 code for Uveal tract anterior disease
From the official ICD-10-CM alphabetic index entry “Disease, diseased › uveal tract (anterior)”. Page updated September 29, 2026.
About coding Uveal tract anterior disease
The ICD-10-CM code for Uveal tract anterior disease is H21.9 (Unspecified disorder of iris and ciliary body). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on H21.9.
Within H21, choose H21.9 (Unspecified disorder of iris and ciliary body) only when documentation doesn't support a more specific option: Hyphema (H21.0), other vascular disorders of iris and ciliary body (H21.1), degeneration of iris and ciliary body (H21.2), cyst of iris, ciliary body and anterior chamber (H21.3), pupillary membranes (H21.4), other and unspecified adhesions and disruptions of iris and ciliary body (H21.5) and other specified disorders of iris and ciliary body (H21.8).
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 Uveal tract anterior disease codes (official index)
- posterior H31.9 — Unspecified disorder of choroid
Common questions about Uveal tract anterior disease ICD-10 codes
What is the ICD-10 code for Uveal tract anterior disease?
- H21.9 — Unspecified disorder of iris and ciliary body. More specific codes apply when the documentation supports them: H31.9.
What is the ICD-10 code for posterior uveal tract anterior disease?
- H31.9 — Unspecified disorder of choroid.
Is H21.9 billable?
- Yes. H21.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H21.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H21.9 as a principal diagnosis.
Is H21.9 a CC or MCC?
- No. H21.9 is neither a CC nor an MCC under MS-DRG v44.0.