All ICD10 Codes

H21.21

Non-Billable
ChapterH00–H59
Ranksubcategory
Official Description

Degeneration of chamber angle

Use a more specific code (4 billable)
H21.211Degeneration of chamber angle, right eyeH21.212Degeneration of chamber angle, left eyeH21.213Degeneration of chamber angle, bilateralH21.219Degeneration of chamber angle, unspecified eye
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 7: Diseases of the Eye and Adnexa (H00-H59).
General instructions are available for the parent sections:
View CH7 NotesView H21 Notes

Clinical Hierarchy

BillableHas subcodes
CH7Diseases of the eye and adnexa (H00-H59)
H15-H22Disorders of sclera, cornea, iris and ciliary body (H15-H22)
H21Other disorders of iris and ciliary body
H21.2Degeneration of iris and ciliary body
H21.21Degeneration of chamber angleNot billable
H21.211Degeneration of chamber angle, right eyeBillable
H21.212Degeneration of chamber angle, left eyeBillable
H21.213Degeneration of chamber angle, bilateralBillable
H21.219Degeneration of chamber angle, unspecified eyeBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to H21.21:

categoryH21
Other disorders of iris and ciliary body
View context instructions
chapterCH7
Diseases of the eye and adnexa (H00-H59)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Degeneration of chamber angle.

Search PCS Codes