Q12: Congenital lens malformations
Codes under Q12 (Congenital lens malformations). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| Q12.0 | Congenital cataract | ✓ |
| Q12.0 | Congenital cataract | ✓ |
| Q12.1 | Congenital displaced lens | ✓ |
| Q12.1 | Congenital displaced lens | ✓ |
| Q12.2 | Coloboma of lens | ✓ |
| Q12.2 | Coloboma of lens | ✓ |
| Q12.3 | Congenital aphakia | ✓ |
| Q12.3 | Congenital aphakia | ✓ |
| Q12.4 | Spherophakia | ✓ |
| Q12.4 | Spherophakia | ✓ |
| Q12.8 | Other congenital lens malformations | ✓ |
| Q12.8 | Other congenital lens malformations | ✓ |
| Q12.9 | Congenital lens malformation, unspecified | ✓ |
| Q12.9 | Congenital lens malformation, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code Q12?
Q12 is an ICD-10-CM category covering Congenital lens malformations. It contains 14 more specific diagnosis codes, 14 of which are billable.
Is Q12 a billable code?
No — Q12 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example Q12.0 — Congenital cataract). 14 of the 14 codes under Q12 are billable.
What codes fall under Q12?
Q12 includes Q12.0, Q12.0, Q12.1, Q12.1, Q12.2, plus 9 more. See the full list with descriptions and billable status above.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free