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H05.0

H05.0Acute inflammation of orbit

Non-billable headerICD-10-CM

H05.0 is a non-billable header ICD-10-CM code for acute inflammation of orbit. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above H05.0

These are not written on H05.0, but they bind it: a note on a category applies to every code beneath it. Billing H05.0 with anything listed here is a denial.

Written on H05 Disorders of orbit

  • congenital malformation of orbit (Q10.7)

Risk adjustment

H05.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code history

H05.0 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead H05.0

5 child codes. Green means billable.

Related codes at this level

Codes that share H05. If H05.0 is not quite right, the correct code is usually one of these.

Questions about H05.0

Is H05.0 a billable ICD-10-CM code?
No. H05.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does H05.0 sit in the tabular list?
Diseases of the eye and adnexa (H00-H59), in the block Disorders of eyelid, lacrimal system and orbit (H00-H05).
What cannot be coded together with H05.0?
H05.0 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above H05.0 (H05) and apply to it just the same.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.