ICD-10-CM 2027
ICD-10 code for orbit chronic inflammation
From the official ICD-10-CM alphabetic index entry “Inflammation, inflamed, inflammatory (with exudation) › orbit (chronic)”. Page updated September 29, 2026.
About coding orbit chronic inflammation
The ICD-10-CM code for orbit chronic inflammation is H05.10 (Unspecified chronic inflammatory disorders of orbit). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on H05.10.
Within H05.1, choose H05.10 (Unspecified chronic inflammatory disorders of orbit) only when documentation doesn't support a more specific option: granuloma of orbit (H05.11) and orbital myositis (H05.12).
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 orbit chronic inflammation codes (official index)
- acute H05.00 — Unspecified acute inflammation of orbit
- abscess
- cellulitis
- osteomyelitis
- periostitis
- tenonitis
- granuloma
- myositis
Common questions about orbit chronic inflammation ICD-10 codes
What is the ICD-10 code for orbit chronic inflammation?
- H05.10 — Unspecified chronic inflammatory disorders of orbit. More specific codes apply when the documentation supports them: H05.00.
What is the ICD-10 code for acute orbit chronic inflammation?
- H05.00 — Unspecified acute inflammation of orbit.
Is H05.10 billable?
- Yes. H05.10 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H05.10 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H05.10 as a principal diagnosis.
Is H05.10 a CC or MCC?
- No. H05.10 is neither a CC nor an MCC under MS-DRG v44.0.