Q24.9 — Congenital malformation of heart, unspecified
Is Q24.9 billable?
Yes, but Q24.9 is an unspecified code. Q24.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Q24.9 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 Q24.9 — the more specific alternatives are listed below.
Q24.9 at a glance
| Code | Q24.9 |
|---|---|
| Description | Congenital malformation of heart, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does Q24.9 group to?
Q24.9 sits in MDC 05 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.
- 306Cardiac Congenital and Valvular Disorders with MCCmedical
- 307Cardiac Congenital and Valvular Disorders without MCCmedical
How is Q24.9 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Q24.9. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Acyanotic heart disease (congenital)
- Atelocardia
- Anomaly, anomalous › cardiac (congenital) (unspecified type)
- Anomaly, anomalous › heart (congenital) (unspecified type)
- Blue › baby
- Cyanotic heart disease › congenital
- Deformity › heart
- Malformation › heart (congenital)
- Development › imperfect, congenital › heart
- Disease, diseased › heart › congenital
- Lesion › cardiac › congenital (s) (nontraumatic)
- Disease, diseased › heart › congenital › cyanotic
Inclusion terms
Alternative wording in documentation that is classified to Q24.9.
- Congenital anomaly of heart
- Congenital disease of heart
Excludes1 — never code together — inherited from Q24
The conditions below can never be reported together with Q24.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- endocardial fibroelastosis (I42.4)
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q24.9, but a patient may have both at the same time. When documentation supports it, Q24.9 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
How long has Q24.9 existed?
Q24.9 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.