ICD-10-CM 2027
ICD-10 code for eyelid inflammation
From the official ICD-10-CM alphabetic index entry “Inflammation, inflamed, inflammatory (with exudation) › eyelid”. Page updated September 29, 2026.
About coding eyelid inflammation
The ICD-10-CM code for eyelid inflammation is H01.9 (Unspecified inflammation of eyelid). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on H01.9.
Within H01, choose H01.9 (Unspecified inflammation of eyelid) only when documentation doesn't support a more specific option: blepharitis (H01.0), noninfectious dermatoses of eyelid (H01.1) and other specified inflammations of eyelid (H01.8).
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 eyelid inflammation codes (official index)
- abscess
- blepharitis
- chalazion
- dermatosis (noninfectious)
- hordeolum
- specified NEC H01.8 — Other specified inflammations of eyelid
Common questions about eyelid inflammation ICD-10 codes
What is the ICD-10 code for eyelid inflammation?
- H01.9 — Unspecified inflammation of eyelid. More specific codes apply when the documentation supports them: H01.8.
Is H01.9 billable?
- Yes. H01.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H01.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H01.9 as a principal diagnosis.
Is H01.9 a CC or MCC?
- No. H01.9 is neither a CC nor an MCC under MS-DRG v44.0.