ICD-10-CM 2027
ICD-10 code for eye agenesis
From the official ICD-10-CM alphabetic index entry “Agenesis › eye”. Page updated September 29, 2026.
About coding eye agenesis
The ICD-10-CM code for eye agenesis is Q11.1 (Other anophthalmos). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on Q11.1.
Within Q11, choose Q11.1 (Other anophthalmos) only when documentation doesn't support a more specific option: cystic eyeball (Q11.0), microphthalmos (Q11.2) and macrophthalmos (Q11.3).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), in MDC 02 (Diseases and Disorders of the Eye), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific eye agenesis codes (official index)
- adnexa Q15.8 — Other specified congenital malformations of eye
Common questions about eye agenesis ICD-10 codes
What is the ICD-10 code for eye agenesis?
- Q11.1 — Other anophthalmos. More specific codes apply when the documentation supports them: Q15.8.
What is the ICD-10 code for adnexa eye agenesis?
- Q15.8 — Other specified congenital malformations of eye.
Is Q11.1 billable?
- Yes. Q11.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q11.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q11.1 as a principal diagnosis.
Is Q11.1 a CC or MCC?
- No. Q11.1 is neither a CC nor an MCC under MS-DRG v44.0.