ICD-10-CM 2027
ICD-10 code for conjunctiva lesion
From the official ICD-10-CM alphabetic index entry “Lesion (s) (nontraumatic) › conjunctiva”. Page updated September 29, 2026.
About coding conjunctiva lesion
The ICD-10-CM code for conjunctiva lesion is H11.9 (Unspecified disorder of conjunctiva).
Within H11, choose H11.9 (Unspecified disorder of conjunctiva) only when documentation doesn't support a more specific option: pterygium of eye (H11.0), conjunctival degenerations and deposits (H11.1), conjunctival scars (H11.2), conjunctival hemorrhage (H11.3), other conjunctival vascular disorders and cysts (H11.4) and other specified disorders of conjunctiva (H11.8).
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.
Common questions about conjunctiva lesion ICD-10 codes
What is the ICD-10 code for conjunctiva lesion?
- H11.9 — Unspecified disorder of conjunctiva.
Is H11.9 billable?
- Yes. H11.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H11.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H11.9 as a principal diagnosis.
Is H11.9 a CC or MCC?
- No. H11.9 is neither a CC nor an MCC under MS-DRG v44.0.