M54.12: Radiculopathy, cervical region
Region: Cervical
By Dr. Daniel Turner, DC · Reviewed September 2, 2026
What does M54.12 mean?
M54.12 is the ICD-10-CM code for radiculopathy in the cervical region: nerve root involvement producing pain, numbness, or weakness that radiates from the neck into the shoulder or arm.
Searched as cervical radiculopathy ICD 10, pinched nerve in neck ICD 10, and cervical nerve root pain diagnosis code.
When does a chiropractor use M54.12?
The code that separates a neck pain case from a nerve case. Radiating symptoms in a dermatomal pattern, a positive Spurling test, or diminished reflexes documented in the exam move the diagnosis from M54.2 to M54.12, and that shift matters: it supports a longer care plan, justifies the exam work performed, and in personal injury cases it materially changes case value because nerve involvement is an objective finding attorneys and adjusters price differently.
Coding rules that matter
- ✓The M54.1 family codes radiculopathy by region; M54.12 is cervical and M54.13 is cervicothoracic
- ✓If a documented disc displacement causes the radiculopathy, M50.1 series codes capture both conditions in one code and are more specific
- ✓Document the objective basis: dermatomal distribution, reflex or strength changes, or orthopedic testing
The codes around M54.12
| Code | Description |
|---|---|
| M54.10 | Radiculopathy, site unspecified |
| M54.11 | Radiculopathy, occipito-atlanto-axial region |
| M54.12 | Radiculopathy, cervical region (this code) |
| M54.13 | Radiculopathy, cervicothoracic region |
| M50.10 | Cervical disc disorder with radiculopathy, unspecified level |
When M54.12 is the wrong code
Not for tingling without an objective correlate, which stays on M54.2 until the exam earns the nerve code. Not for radiculopathy with a documented disc cause, which belongs on the M50.1 combination family. And not for cervicobrachial syndrome, M53.1, when the arm pain is diffuse rather than dermatomal.
How does M54.12 work on Medicare chiropractic claims?
Pairs as the secondary diagnosis behind M99.01 on Medicare claims for cervical CMT. Radiculopathy is a strong medical necessity anchor for active treatment under the AT modifier because it names a specific neurologic finding rather than a symptom.
Where claims go wrong
Coding radiculopathy from subjective tingling alone with no documented objective finding; keeping M54.12 on the claim after symptoms have centralized and resolved; missing the M50.1 upgrade when imaging shows the disc cause.
How Cervica helps with M54.12
Cervica validates diagnosis pointers line by line before a claim goes out, checks the Medicare subluxation pairing and region agreement automatically, and carries diagnoses forward from the SOAP note so the claim always matches what the documentation actually says.
Related codes
- →M54.2 · Cervicalgia
- →M54.16 · Radiculopathy, lumbar region
- →M54.14 · Radiculopathy, thoracic region
- →M51.26 · Other intervertebral disc displacement, lumbar region
- →98940 · the CPT code this diagnosis most often supports
- →97110 · the CPT code this diagnosis most often supports
- →CO-50 · the denial coding mistakes here produce
Quick answers
What does M54.12 mean?
M54.12 is the ICD-10-CM code for radiculopathy in the cervical region: nerve root involvement producing pain, numbness, or weakness that radiates from the neck into the shoulder or arm.
When does a chiropractor use M54.12?
The code that separates a neck pain case from a nerve case. Radiating symptoms in a dermatomal pattern, a positive Spurling test, or diminished reflexes documented in the exam move the diagnosis from M54.2 to M54.12, and that shift matters: it supports a longer care plan, justifies the exam work performed, and in personal injury cases it materially changes case value because nerve involvement is an objective finding attorneys and adjusters price differently.
How does M54.12 work on Medicare chiropractic claims?
Pairs as the secondary diagnosis behind M99.01 on Medicare claims for cervical CMT. Radiculopathy is a strong medical necessity anchor for active treatment under the AT modifier because it names a specific neurologic finding rather than a symptom.
References
General information for billing teams, not medical, legal, or coding advice for any individual claim. ICD-10-CM is maintained by CMS and the National Center for Health Statistics; the official code set and guidelines control. Payer policies vary.