L97.921 — Non-pressure chronic ulcer of unspecified part of left lower leg limited to breakdown of skin
ICD-10-CM
Prior Authorization
No Prior Auth Required
Code is covered without prior authorization (high confidence)
Documentation Required
- The patient’s medical record must include the ordering provider’s assessment as it relates to the patient’s complaint for that visit.
- Medical records must contain relevant medical history and results of pertinent tests or procedures performed.
- For diagnostic tests, report the result of the test if known; otherwise report the symptoms that prompted performing the test.
- All services ordered or rendered to Medicare beneficiaries must be signed and dated; include a signed and dated office visit record or operative report in the medical record.
Key Coverage Criteria
- A valid ICD-10-CM diagnosis code that best describes the patient’s condition for which the debridement service was performed must be reported on the claim.
- When a service requires a referring or ordering physician, the name and NPI of the referring/ordering physician must be reported on the claim.
- Non-invasive vascular diagnostic tests are covered when ordered by the treating practitioner or a consulting physician who will use the results to manage the beneficiary's specific medical problem.
- A documented referral/order must be on record for each individual non-invasive vascular study performed for coverage to apply.
- Cerebrovascular arterial duplex follow-up is covered annually for stenosis 20–49% (diameter reduction).
- Cerebrovascular arterial duplex follow-up is covered every six months for stenosis 50–79% (diameter reduction).
9 Active Policies
A59920 — Billing and Coding: Non-Invasive Vascular Studies
A56459 — Billing and Coding: Debridement Services
A56697 — Billing and Coding: Non-Invasive Vascular Studies
A57311 — Billing and Coding: Physical Therapy - Home Health
A58565 — Billing and Coding: Wound and Ulcer Care
Related Codes
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