H21.56
Header — not billablePupillary abnormalities
The ICD-10 code for pupillary abnormalities is H21.56.
H21.56 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 4 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
- congenital deformity of pupil (Q13.2-)
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Deformed pupil
- Ectopic pupil
- Rupture of sphincter, pupil
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- H21.50Unspecified adhesions of irisnon-billable header
- H21.51Anterior synechiae (iris)non-billable header
- H21.52Goniosynechiaenon-billable header
- H21.53Iridodialysisnon-billable header
- H21.54Posterior synechiae (iris)non-billable header
- H21.55Recession of chamber anglenon-billable header
- H21.56Pupillary abnormalitiesnon-billable header