H21.3Cyst of iris, ciliary body and anterior chamber

H21.3 is the ICD-10-CM diagnosis code for cyst of iris, ciliary body and anterior chamber. 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 6 subcodes must be used instead.

Within H21 (other disorders of iris and ciliary body), H21.3 is specifically for cyst of iris, ciliary body and anterior chamber. Related codes cover Hyphema (H21.0), other vascular disorders of iris and ciliary body (H21.1), degeneration of iris and ciliary body (H21.2), pupillary membranes (H21.4), other and unspecified adhesions and disruptions of iris and ciliary body (H21.5), other specified disorders of iris and ciliary body (H21.8) and unspecified disorder of iris and ciliary body (H21.9).

To report this condition, pick the subcode that matches the documentation: H21.30 (chamber), H21.31 (chamber), H21.32 (chamber), H21.33 (chamber), H21.34 (plana) and H21.35 (plana).

The conditions in its Excludes2 note aren't part of H21.3, but may be coded alongside it if the patient has both: miotic pupillary cyst (H21.27-).

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