H21.22Degeneration of ciliary body

H21.22 is the ICD-10-CM diagnosis code for degeneration of ciliary body. It belongs to category H21 (other disorders of iris and ciliary body), block H15-H22 (disorders of sclera, cornea, iris and ciliary body) and chapter 7 (diseases of the eye and adnexa). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within H21.2 (degeneration of iris and ciliary body), H21.22 is specifically for degeneration of ciliary body. Related codes cover degeneration of chamber angle (H21.21), degeneration of iris (pigmentary) (H21.23), 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: H21.221 (right eye), H21.222 (left eye), H21.223 (bilateral) and H21.229 (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.