Does D74.8 require prior authorization?

No, D74.8 does not require prior authorization (high confidence). Code is covered without prior authorization.

`D74.8` — Other methemoglobinemias

ICD-10-CM

No Prior Auth Required

Code is covered without prior authorization (high confidence)

Verify and document compliance with applicable NCCI edits and OPPS packaging rules prior to billing.
Include a valid ICD-10-CM diagnosis code on the claim that best describes the patient's condition for which the heavy metal test was performed.
For diagnostic heavy metal tests, report the test result on the claim if known; if the result is not known, report the symptoms that prompted the test.
When required, report the referring/ordering physician's name and NPI on the claim.

Pharmacogenomics (PGx) testing is covered when it is reasonable and necessary per LCD L39063 and Medicare coverage rules for the beneficiary's clinical indication.
CPT 81418 (PGx multi-gene panel) is covered when the test assays at least 6 genes, including CYP2C19 and CYP2D6 and CYP2D6 duplication/deletion analysis, and the panel is clinically indicated to guide drug therapy.
A clinician-ordered single gene or allele test is considered covered when the billed component corresponds to the single gene/allele that was reasonable and necessary, even if the laboratory platform concurrently interrogated other genes operationally.
Germline testing panels that include some previously tested genetic content may be covered if there is established clinical utility for the remaining non-duplicative genetic components of the panel.
Genes may be assayed serially or in parallel; additional gene analyses done after a reflex decision are covered when those reflexive analyses are reasonable and necessary for the beneficiary's care.
Germline pharmacogenomic (PGx) testing is covered when the test results have established clinical utility to guide management of a specific drug therapy for the Medicare beneficiary.

L35074 — Heavy Metal Testing

J06

A56767 — Billing and Coding: Heavy Metal Testing

J06

A59915 — Billing and Coding: Pharmacogenomic Testing

J06

L39995 — Pharmacogenomic Testing

J06

A59914 — Billing and Coding: Pharmacogenomic Testing

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