Q00 — Anencephaly and similar malformations
Not billable
Is Q00 billable?
No — Q00 is a non-billable header code. Q00 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 Q00.
Billable codes under this header
Q00 at a glance
| Code | Q00 |
|---|---|
| Description | Anencephaly and similar malformations |
| 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 Q00, but a patient may have both at the same time. When documentation supports it, Q00 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
What codes fall under Q00? (3)
How long has Q00 existed?
Q00 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.