Does M47.021 require prior authorization?

No, M47.021 does not require prior authorization (medium confidence). Covered without prior authorization by at least one policy, though another does not cover it.

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`M47.021`, Vertebral artery compression syndromes, occipito-atlanto-axial region

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

A clinical history from the referral source indicating the need for testing must be available in the medical record and retrievable for review.
If an E/M service is billed as separate and identifiable, medical record must document medical necessity and the E/M CPT code must be billed with modifier 25.
Nerve conduction study reports must include numerical data (amplitude, latency, velocity) and F-wave descriptions must reference corresponding motor conduction data.

Neuromuscular junction studies (CPT 95937) reports must document stimulation rate and any significant incremental or decremental responses and may be reported separately from motor/sensory NCS of the same nerves.

When testing exceeds the reasonable maximum numbers listed in the guidance table, the provider must supply supplementary documentation justifying the additional tests; documentation must also justify testing an asymptomatic contralateral limb for normative values.

Key Coverage Criteria

Electrodiagnostic testing (EMG and/or nerve conduction studies) is indicated for evaluation of suspected carpal tunnel syndrome.
EMG and/or nerve conduction studies are indicated for evaluation of suspected radiculopathy.
EMG and/or nerve conduction studies are indicated for evaluation of suspected mononeuropathy (single-nerve entrapment or injury).
EMG and/or nerve conduction studies are indicated for evaluation of suspected polyneuropathy or mononeuropathy multiplex.
EMG is indicated for evaluation of suspected myopathy.
EMG and nerve conduction studies are indicated for evaluation of suspected motor neuropathies (e.g., amyotrophic lateral sclerosis).

20 Active Policies

CGS-J15-L35897, Nerve Conduction Studies and Electromyography

J15

CGS-J15-L35906, Somatosensory Testing

J15

CGS-J18-L35897, Nerve Conduction Studies and Electromyography

J18

CGS-J18-L35906, Somatosensory Testing

J18

WPS-J5-L35486, Pelvic Floor Dysfunction: Anorectal Manometry and EMG

A57595, Billing and Coding: Pelvic Floor Dysfunction: Anorectal Manometry and EMG

WPS-J5-L34594, Nerve Conduction Studies and Electromyography

WPS-J5-L34623, Intraoperative Neurophysiological Testing

A57478, Billing and Coding: Nerve Conduction Studies and Electromyography

WPS-J5-L34624, Somatosensory Testing

A57597, Billing and Coding: Somatosensory Testing

A59434, Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Wound

A57604, Billing and Coding: Intraoperative Neurophysiological Testing

NGS-J6-L35098, Nerve Conduction Studies and Electromyography

A57668, Billing and Coding: Nerve Conduction Studies and Electromyography

A58893, Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Wound

WPS-J8-L34624, Somatosensory Testing

WPS-J8-L34623, Intraoperative Neurophysiological Testing

WPS-J8-L34594, Nerve Conduction Studies and Electromyography

WPS-J8-L35486, Pelvic Floor Dysfunction: Anorectal Manometry and EMG

`M47.021`, Vertebral artery compression syndromes, occipito-atlanto-axial region

Prior Authorization

Documentation Required

Key Coverage Criteria

20 Active Policies

Related Codes

Have a follow-up question?

M47.021, Vertebral artery compression syndromes, occipito-atlanto-axial region

Prior Authorization

Documentation Required

Key Coverage Criteria

20 Active Policies

Related Codes

Have a follow-up question?

`M47.021`, Vertebral artery compression syndromes, occipito-atlanto-axial region