Q13.9 — Congenital malformation of anterior segment of eye, unspecified
Is Q13.9 billable?
Yes, but Q13.9 is an unspecified code. Q13.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Q13.9 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting Q13.9 — the more specific alternatives are listed below.
Q13.9 at a glance
| Code | Q13.9 |
|---|---|
| Description | Congenital malformation of anterior segment of eye, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does Q13.9 group to?
Q13.9 sits in MDC 02 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 124Other Disorders of the Eye with MCC or Thrombolytic Agentmedical
- 125Other Disorders of the Eye without MCCmedical
How is Q13.9 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Q13.9. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Anomaly, anomalous › eye › anterior segment (congenital) (unspecified type)
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q13.9, but a patient may have both at the same time. When documentation supports it, Q13.9 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
Excludes2 — not included here — inherited from Q10-Q18
The conditions below are not part of Q13.9, but a patient may have both at the same time. When documentation supports it, Q13.9 and the excluded code may both be reported.
- cleft lip and cleft palate (Q35-Q37)
- congenital malformation of cervical spine (Q05.0, Q05.5, Q67.5, Q76.0-Q76.4)
- congenital malformation of larynx (Q31.-)
- congenital malformation of lip NEC (Q38.0)
- congenital malformation of nose (Q30.-)
- congenital malformation of parathyroid gland (Q89.2)
- congenital malformation of thyroid gland (Q89.2)
How long has Q13.9 existed?
Q13.9 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.