ICD-10-CM 2027
ICD-10 code for trichiasis
From the official ICD-10-CM alphabetic index entry “Trichiasis (eyelid)”. Page updated September 29, 2026.
About coding trichiasis
The ICD-10-CM code for trichiasis is H02.059 (Trichiasis without entropion unspecified eye, unspecified eyelid). The official index lists 6 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on H02.059.
Within H02.05, choose H02.059 (unspecified eye, unspecified eyelid) only when documentation doesn't support a more specific option: right upper eyelid (H02.051), right lower eyelid (H02.052), right eye, unspecified eyelid (H02.053), left upper eyelid (H02.054), left lower eyelid (H02.055) and left eye, unspecified eyelid (H02.056).
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 trichiasis codes (official index)
- with entropion
- left H02.056 — Trichiasis without entropion left eye, unspecified eyelid
- lower H02.055 — Trichiasis without entropion left lower eyelid
- upper H02.054 — Trichiasis without entropion left upper eyelid
- right H02.053 — Trichiasis without entropion right eye, unspecified eyelid
- lower H02.052 — Trichiasis without entropion right lower eyelid
- upper H02.051 — Trichiasis without entropion right upper eyelid
Common questions about trichiasis ICD-10 codes
What is the ICD-10 code for trichiasis?
- H02.059 — Trichiasis without entropion unspecified eye, unspecified eyelid. More specific codes apply when the documentation supports them: H02.056, H02.055, H02.054, H02.053 and others below.
What is the ICD-10 code for left trichiasis?
- H02.056 — Trichiasis without entropion left eye, unspecified eyelid.
What is the ICD-10 code for right trichiasis?
- H02.053 — Trichiasis without entropion right eye, unspecified eyelid.
Is H02.059 billable?
- Yes. H02.059 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H02.059 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H02.059 as a principal diagnosis.
Is H02.059 a CC or MCC?
- No. H02.059 is neither a CC nor an MCC under MS-DRG v44.0.