Does G21.9 require prior authorization?

No, G21.9 does not require prior authorization (medium confidence). Covered without prior authorization by at least one policy, though another does not cover it.

Backwork Sign up free

`G21.9`, Secondary parkinsonism, unspecified

ICD-10-CM

Prior Authorization

No Prior Auth Required

Covered without prior authorization by at least one policy, though another does not cover it (medium confidence)

Documentation Required

Maintain all documentation in the patient’s medical record; every page must be legible, include patient identification (e.g., full name, dates of service), and be made available to the contractor upon request.
Documentation must include the legible signature of the physician or non-physician practitioner responsible for and providing the care to the patient.
The submitted medical record must support the use of the selected ICD-10-CM code(s).
The submitted CPT/HCPCS code must accurately describe the service performed.

Key Coverage Criteria

Speech-language pathology (SLP) services for treatment or evaluation of communication disorders when determined reasonable and necessary per LCD L35070.
Selection and prescription of speech-generating devices should be billed with CPT code 92607.
Adaptation and training for speech-generating devices should be billed with CPT code 92609.
Report group therapy with CPT code 92508 when patients are not receiving direct one-on-one contact and are supervised by the therapist.
Use the appropriate CPT evaluation code for re-evaluations in SLP because CPT does not define a distinct re-evaluation code.
Psychiatric/psychological services are covered when there is a reasonable expectation that withdrawing treatment would cause the patient's condition to deteriorate, relapse, or require hospitalization.

20 Active Policies

CGS-J15-L34353, Outpatient Psychiatry and Psychology Services

J15

CGS-J18-L34353, Outpatient Psychiatry and Psychology Services

J18

A57480, Billing and Coding: Psychiatry and Psychology Services

WPS-J5-L34616, Psychiatry and Psychology Services

Have a follow-up question?

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

Ask Backwork about G21.9 Sign up free

G21.9, Secondary parkinsonism, unspecified