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ICD-10-CM 2027

ICD-10 code for iris pigmentary degeneration

H21.23

Degeneration of iris (pigmentary)

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Degeneration, degenerative › iris (pigmentary)”. Page updated September 29, 2026.

About coding iris pigmentary degeneration

The ICD-10-CM code for iris pigmentary degeneration is H21.23 (Degeneration of iris (pigmentary)).

Within H21.2 (degeneration of iris and ciliary body), H21.23 is specifically for degeneration of iris (pigmentary). Related codes cover degeneration of chamber angle (H21.21), degeneration of ciliary body (H21.22), degeneration of pupillary margin (H21.24), Iridoschisis (H21.25), iris atrophy (essential) (progressive) (H21.26), Miotic pupillary cyst (H21.27) and other iris atrophy (H21.29).

To report this condition, pick the subcode that matches the documentation: H21.231 (right eye), H21.232 (left eye), H21.233 (bilateral) and H21.239 (unspecified eye).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about iris pigmentary degeneration ICD-10 codes

What is the ICD-10 code for iris pigmentary degeneration?

H21.23 — Degeneration of iris (pigmentary) (a header code; report a more specific subcode).

Is H21.23 billable?

No. H21.23 is a header code. Report one of its more specific subcodes instead.