ICD-10-CM diagnosis code
H05.312 Atrophy of left orbit
- Billable
- Yes, a complete code (FY2026)
- Category
- H05 Disorders of orbit
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Other codes in H05
102 complete codes in this category.
- H05.261Pulsating exophthalmos, right eye
- H05.262Pulsating exophthalmos, left eye
- H05.263Pulsating exophthalmos, bilateral
- H05.269Pulsating exophthalmos, unspecified eye
- H05.30Unspecified deformity of orbit
- H05.311Atrophy of right orbit
- H05.312Atrophy of left orbit
- H05.313Atrophy of bilateral orbit
- H05.319Atrophy of unspecified orbit
- H05.321Deformity of right orbit due to bone disease
- H05.322Deformity of left orbit due to bone disease
- H05.323Deformity of bilateral orbits due to bone disease
Documentation tips
- Make sure the note supports every element of the title, “Atrophy of left orbit”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to H05.
The international WHO ICD-10 also has H05, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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