Does C84.00 require prior authorization?

No, C84.00 does not require prior authorization (high confidence). Covered without prior authorization.

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`C84.00`, Mycosis fungoides, unspecified site

ICD-10-CM

Prior Authorization

No Prior Auth Required

Covered without prior authorization (high confidence)

Documentation Required

The performing provider must maintain medical record documentation that clearly supports the medical necessity of the billed service and include that documentation in the patient's record for review upon request.
Documentation should state whether the block was diagnostic or therapeutic, include pre- and post-procedure evaluations, and document patient education and the assessment of procedural outcome.
Documentation must support coverage criteria in the LCD 'Indications and Limitations of Coverage and/or Medical Necessity' section and the provider should document why services cannot be rendered by the surgeon when applicable.
For services requiring a referring/ordering physician, the referring/ordering physician's name and NPI must be reported on the claim.

Key Coverage Criteria

CPT codes 64400-64530 for peripheral nerve blocks may be reported on the date of surgery when performed for postoperative pain management only if the operative anesthesia is general anesthesia, subarachnoid injection, or epidural injection and the adequacy of intraoperative anesthesia is not dependent on the peripheral nerve block.
Peripheral nerve block services that are separate, medically necessary services which cannot be rendered by the surgeon may be reported if the surgeon documents the reason for referral and the additional services are justified in the medical record.
Vitamin D assay testing is payable under Medicare Part B when performed in an office (POS 11), independent clinic (POS 49), Federally Qualified Health Center (POS 50), or independent laboratory (POS 81).
Non-physician practitioners (e.g., nurse practitioners, clinical nurse specialists, physician assistants) may certify, order, and establish the plan of care for Vitamin D assay testing as authorized by State law (outpatient settings other than CORFs).
Lab-developed tests for inherited cancer syndromes in patients with cancer as described in Local Coverage Determination (LCD) L39040 are the services addressed by this billing/coding guidance.
ClonoSeq (NGS-based MRD test) is covered for patients with acute lymphoblastic leukemia (ALL).

20 Active Policies

CGS-J15-L38822, MolDX: Minimal Residual Disease Testing for Cancer

J15

CGS-J15-L39434, Allogeneic Hematopoietic Cell Transplantation for Primary Refractory or Relapsed Hodgkin's and Non-Hodgkin's Lymphoma with B-cell or T-cell Origin

J15

CGS-J18-L38822, MolDX: Minimal Residual Disease Testing for Cancer

J18

CGS-J18-L39434, Allogeneic Hematopoietic Cell Transplantation for Primary Refractory or Relapsed Hodgkin's and Non-Hodgkin's Lymphoma with B-cell or T-cell Origin

J18

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C84.00, Mycosis fungoides, unspecified site