Does Z91.138 require prior authorization?

No, Z91.138 does not require prior authorization (high confidence). Code is covered without prior authorization.

`Z91.138` — Patient's unintentional underdosing of medication regimen for other reason

ICD-10-CM

No Prior Auth Required

Code is covered without prior authorization (high confidence)

For services that require a referring/ordering physician, the referring/ordering physician's name and NPI must be reported on the claim.
The claim must include a valid ICD-10-CM diagnosis code that best describes the patient's condition for which the urine drug test was performed.
For diagnostic urine drug tests, report the test result if known; if the result is not known, report the symptoms that prompted the performance of the test.
This billing and coding guidance complements Local Coverage Determination L35724 and providers should follow LCD L35724 in conjunction with NCCI/OPPS rules when preparing claims.

Urine drug testing (UDT) and drugs-of-abuse testing are covered when reasonable and necessary per LCD L35006 and ordered on an individual patient basis by the treating clinician with medical-record documentation of medical necessity.
Patients with a documented diagnosis consistent with substance use disorder (SUD) may qualify for an exception to the standard presumptive UDT annual limits.
Drug testing services are covered when they meet the medical necessity and coverage indications specified in LCD L36029.
Medicare Part B will pay for drug screening services when furnished in allowed places of service: office (11), urgent care (20), independent clinic (49), FQHC freestanding (50), RHC freestanding (72), and independent laboratory (81).
Urine, blood, or oral fluid specimens may be used for drug testing, with urine preferred for broad screening of common drugs.
Medicare Part B will pay for drug screening services when all coverage criteria, limitations, and medical necessity requirements of LCD DL34645 are met.

A56915 — Billing and Coding: Urine Drug Testing

J05

L34645 — Urine Drug Testing

J05

L39611 — Urine Drug Testing

J06

A59416 — Billing and Coding: Urine Drug Testing

J06

A56645 — Billing and Coding: Controlled Substance Monitoring and Drugs of Abuse Testing

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