Does S99.912A require prior authorization?

No, S99.912A does not require prior authorization (high confidence). Code is covered without prior authorization.

`S99.912A` — Unspecified injury of left ankle, initial encounter

ICD-10-CM

No Prior Auth Required

Code is covered without prior authorization (high confidence)

When routine foot care needs to meet one of the exclusions, include the applicable Q modifier on the claim: Q7 for 1 Class A finding, Q8 for 2 Class B findings, and Q9 for 1 Class B plus 2 Class C findings.
For all foot-care claims report an appropriate foot/toe location modifier (e.g., LT, RT, TA, T1-T9) to identify laterality and specific toe when applicable.
If a significant, separately identifiable evaluation and management service is provided on the same day as routine foot care, append modifier -25 to the E/M claim line.
Total the number of keratotic lesions debrided and select the most appropriate CPT code 11055-11057 based on that total (example: code 11056 for two to four lesions).

Removal of corns and calluses of the feet must be billed using CPT codes 11055-11057 (paring/cutting of benign hyperkeratotic lesion) and the procedure code that most accurately describes the service performed should be reported.
Foot care services are covered when the beneficiary has a listed systemic condition that justifies coverage per Medicare Benefit Policy Manual Pub.100-02, Ch.15, Section 290.4D.
For diagnosis codes designated by an asterisk, the patient must be under the active care of an M.D. or D.O., documented as having been seen for the complicating disease within the 6 months prior to service.
Claims asserting presumptive coverage must include a systemic-condition diagnosis from IOM 100-02 Ch.15 Section 290 Group 1 and a valid billing modifier Q7, Q8, or Q9.
Mycotic nail debridement is covered when mycotic nails are present in the context of a systemic disease with class findings and the appropriate Q modifier on the claim.
Mycotic nail debridement is covered without systemic disease if an ambulatory patient has marked limitation of ambulation, pain, or secondary infection from thickened/dystrophic infected toenail plate.

A56232 — Billing and Coding: Foot Care

J05

A52996 — Billing and Coding: Routine Foot Care

J12

L35138 — Routine Foot Care

J12

A56680 — Billing and Coding: Routine Foot Care

L37643 — Routine Foot Care

Ask Verity about documentation requirements, denial risks, or coverage in your state.