Q66.21 — Congenital metatarsus primus varus
Is Q66.21 billable?
No — Q66.21 is a non-billable header code. Q66.21 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 Q66.21.
Q66.21 at a glance
| Code | Q66.21 |
|---|---|
| Description | Congenital metatarsus primus varus |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is Q66.21 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Q66.21. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Primus varus
- Metatarsus, metatarsal › varus › primus
Excludes1 — never code together — inherited from Q66
The conditions below can never be reported together with Q66.21 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q66.21, but a patient may have both at the same time. When documentation supports it, Q66.21 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
What codes fall under Q66.21? (3)
How long has Q66.21 existed?
Q66.21 first appears in FY2018 (FY2017 is not available, so it may have appeared then).
- FY2021: Q66.21 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.