Q23.8 — Other congenital malformations of aortic and mitral valves
Not billable
Is Q23.8 billable?
No — Q23.8 is a non-billable header code. Q23.8 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath Q23.8.
Q23.8 at a glance
| Code | Q23.8 |
|---|---|
| Description | Other congenital malformations of aortic and mitral valves |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q23.8, but a patient may have both at the same time. When documentation supports it, Q23.8 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
What codes fall under Q23.8? (3)
How long has Q23.8 existed?
Q23.8 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
- FY2025: Q23.8 stopped being billable
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.