ICD-10-CM · Spine

M50.01

Cervical disc disorder at the C2-C3 or C3-C4 level with documented spinal cord compression (myelopathy) — the high cervical region variant of the M50.0 family.

Verified May 8, 2026 · 5 sources ↓

Status: Billable
Chapter: 13
Related CPT: 12
Region: Spine

Drawn from CDCICD10DataCMSAAPCIcd10monitor

Documentation tips

What should appear in the chart to support M50.01.

Source · Editorial brief grounded in 5 cited references ↓

Name the specific disc level (C2-C3 or C3-C4) explicitly — 'high cervical' alone is acceptable but level-specific documentation removes any ambiguity at audit.
Record objective myelopathic signs: hyperreflexia, Hoffman's sign, Babinski response, spasticity, or gait ataxia — these distinguish myelopathy from radiculopathy in the medical record.
Include MRI findings that confirm cord compression or T2 signal change at the C2-C3 or C3-C4 disc level; Kellgren-Lawrence equivalents do not apply here — reference cord signal, canal diameter, and TRAM or Nurick grade if used.
Document bowel or bladder involvement if present — this supports medical necessity for urgent or surgical intervention and may affect DRG assignment.
Note conservative care history and why it failed or is contraindicated, especially when submitting prior authorization for cervical fusion under CMS LCD A59624.

Related CPT procedures

Procedure codes commonly billed with M50.01. Linking the right diagnosis to the right procedure is what establishes medical necessity.

Source · CMS LCDs · AAOS specialty guidance · claims-pattern analysis

22548 $1,943.60

Arthrodesis of the clivus-C1-C2 complex via anterior transoral or extraoral approach, with or without odontoid process excision.

22551 $1,604.91

Anterior cervical discectomy and fusion (ACDF) at a single interspace, performed through a front-of-neck approach with removal of disc material and arthrodesis of adjacent vertebral bodies.

22552 $353.05

Add-on code for each additional cervical interspace fused via anterior interbody approach during the same session as the primary procedure (22551), including disc space preparation, discectomy, osteophytectomy, and spinal cord or nerve root decompression below C2.

22554 $1,215.79

Anterior interbody arthrodesis of the cervical spine below C2, performed via anterior approach with minimal diskectomy to prepare the interspace for fusion — not performed for decompression purposes.

22600 $1,282.93

Posterior or posterolateral cervical spinal fusion at a single interspace below C2, performed through a posterior approach to achieve bony arthrodesis.

63001 $1,193.75

Posterior cervical laminectomy covering 1 or 2 vertebral segments, performed to decompress the spinal cord or cauda equina, without facetectomy, foraminotomy, or discectomy.

63015 $1,444.59

Cervical laminectomy spanning more than two vertebral segments for spinal cord or cauda equina exploration and/or decompression, performed without facetectomy, foraminotomy, or discectomy.

63045 $1,249.53

Open cervical laminectomy with facetectomy and foraminotomy at a single vertebral level to decompress nerve roots or the spinal cord.

72141 $190.72

MRI of the cervical spinal canal and its contents performed without contrast material.

99214 $135.61

Office visit for an established patient requiring moderate-complexity medical decision making (MDM), or 30–39 minutes of total provider time on the date of service.

72142 View procedure details

72156 View procedure details

Common coding pitfalls

The recurring mistakes coders make with M50.01 and adjacent codes.

Source · Editorial brief grounded in CDC ICD-10-CM tabular guidance, AAOS coding references, and cited references ↓

Defaulting to M50.00 (unspecified cervical region) when the MRI or operative report clearly identifies C2-C3 or C3-C4 — specificity is available and required.
Using M50.01 when the disc disorder is at C4-C5 or lower; those levels map to M50.021–M50.023, not the high cervical code.
Conflating myelopathy with radiculopathy — if the provider documents nerve root symptoms only (dermatomal pain, Spurling's positive, EMG radiculopathy), use M50.11 (high cervical radiculopathy) instead.
Coding M50.01 when spondylosis is the documented primary cause of cord compression — that scenario belongs under M47.12 (cervical spondylosis with myelopathy).
Omitting a secondary neurological deficit code when myelopathy has resulted in functional impairment (e.g., gait disorder); the tabular 'Use Additional Code' guidance may require a supplemental code depending on manifestation.

Clinical context

Source · Editorial summary grounded in 5 cited references ↓

M50.01 applies specifically when a disc disorder at C2-C3 or C3-C4 is causing myelopathy — that is, spinal cord dysfunction, not just nerve root irritation. Myelopathy at this level can produce upper motor neuron signs (hyperreflexia, spasticity, clonus, Hoffman's sign), gait disturbance, and in severe cases bowel or bladder dysfunction. It is clinically distinct from radiculopathy (M50.11) and from mid-cervical myelopathy (M50.02x).

Do not use M50.01 for spondylotic myelopathy without a documented disc disorder as the primary cause — cervical spondylosis with myelopathy codes to M47.12 instead. Similarly, if the operative or imaging report confirms the pathological disc is at C4-C5 or below, shift to M50.021 (C4-C5), M50.022 (C5-C6), or M50.023 (C6-C7). Use M50.00 only when the cervical level is genuinely unspecified in documentation — not as a shortcut when level data exists.

CMS LCD A59624 lists M50.01 as a covered diagnosis for cervical fusion procedures. Payors expect supporting imaging (MRI preferred) demonstrating cord compression at C2-C3 or C3-C4, plus clinical documentation of myelopathic signs before approving surgical or advanced interventional management.

Inclusion & exclusion notes

Per the official ICD-10-CM Tabular List.

Source · CDC ICD-10-CM Official Tabular List · 2026

Includes

C2-C3 disc disorder with myelopathy
C3-C4 disc disorder with myelopathy

Sibling codes

Other billable codes under M50.0 (laterality / anatomic variants).

M50.00

Cervical disc disorder with myelopathy, unsp cervical region

M50.03

Cervical disc disorder w myelopathy, cervicothoracic region

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 5 cited references ↓

01What disc levels does M50.01 cover?

M50.01 covers C2-C3 and C3-C4 disc disorders with myelopathy. Both levels are listed as 'Applicable To' entries in the FY2026 ICD-10-CM Tabular List under M50.01.

02What is the difference between M50.01 and M50.11?

M50.01 is myelopathy (spinal cord dysfunction) at the high cervical region; M50.11 is radiculopathy (nerve root dysfunction) at the same region. The provider must explicitly document which neurological syndrome is present — do not assume myelopathy from imaging alone without clinical signs.

03Can M50.01 and M50.11 be coded together on the same claim?

Yes, if the provider documents both myelopathy and radiculopathy at the high cervical level and they are clinically independent findings. Code both; do not collapse them into one code.

04When should I use M47.12 instead of M50.01?

Use M47.12 (cervical spondylosis with myelopathy) when bony degenerative changes — osteophytes, facet hypertrophy, ligamentum flavum thickening — are the documented primary cause of cord compression, rather than a disc disorder. If the disc is the primary culprit identified by the surgeon, M50.01 is correct.

05Does CMS cover cervical fusion for M50.01?

Yes. CMS LCD Article A59624 for Cervical Fusion explicitly lists M50.01 as a covered diagnosis code. Documentation must include imaging-confirmed cord compression and the physician's legible signature.

06What imaging is needed to support M50.01 for payer review?

MRI of the cervical spine (CPT 72141, 72142, or 72156) demonstrating cord compression or T2 hyperintensity at C2-C3 or C3-C4 is the standard. X-ray alone (72040) is typically insufficient to confirm myelopathy.

07Is M50.01 valid for FY2026 dates of service?

Yes. M50.01 is a billable, active code in the FY2026 ICD-10-CM code set effective October 1, 2025, with no pending deletion or revision notices as of that effective date.

Sources & references

Editorial content was developed using the following public sources. Last verified May 8, 2026.

Mira AI Scribe

The Mira AI Scribe captures the disc level (C2-C3 or C3-C4), objective myelopathic signs on exam (Hoffman's, hyperreflexia, gait ataxia), and MRI findings showing cord compression or T2 signal change at that level. Capturing these specifics prevents downcoding to M50.00 (unspecified region) and eliminates the audit risk of using a myelopathy code without documented cord involvement.

See how Mira captures M50.01 documentation