ICD-10-CM · Spine

M47.10

M47.10 identifies degenerative spinal disease (spondylosis) that has produced spinal cord compression and dysfunction (myelopathy) at a location not documented in the medical record.

Verified May 8, 2026 · 8 sources ↓

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

Drawn from CDCICD10DataAAPCOutsourcestrategiesIcdcodes

Documentation tips

What should appear in the chart to support M47.10.

Source · Editorial brief grounded in 8 cited references ↓

Name the spinal region explicitly (e.g., 'cervical,' 'thoracic,' 'lumbar') so the coder can assign a site-specific M47.1x code rather than defaulting to M47.10.
Confirm myelopathy in the note — document objective findings such as hyperreflexia, Babinski sign, Lhermitte's sign, clonus, or gait disturbance that distinguish cord dysfunction from radiculopathy.
Correlate clinical findings with imaging: MRI T2 signal change within the cord, multilevel canal stenosis, or cord compression at a named vertebral level should be referenced by level (e.g., C4-C5, C5-C6).
If both myelopathy and radiculopathy are present, document each component separately — they may be coded together using M47.1x plus a secondary radiculopathy code if clinically supported.
State the etiology explicitly as spondylosis (osteoarthritis of the spine, facet degeneration, disc-osteophyte complex) rather than leaving it ambiguous, since disc-origin myelopathy maps to M50.0x or M51.0x instead.

Related CPT procedures

Procedure codes commonly billed with M47.10. Linking the right diagnosis to the right procedure is what establishes medical necessity.

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

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.

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.

22610 $1,255.54

Single-level posterior or posterolateral thoracic spine arthrodesis using a transverse process technique

22630 $1,510.72

Posterior interbody arthrodesis of a single lumbar interspace, including laminectomy and/or discectomy performed to prepare the interspace for fusion rather than for decompression.

63045 $1,249.53

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

63048 $187.38

Add-on code for laminectomy, facetectomy, and foraminotomy at each additional cervical, thoracic, or lumbar vertebral segment beyond the primary segment.

63081 $1,660.02

Partial or complete removal of a cervical vertebral body via an anterior or anterolateral approach to decompress the spinal cord and/or nerve roots at a single level.

72141 $190.72

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

72146 $190.39

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

72148 $191.72

Non-contrast MRI of the lumbar spine used to evaluate disc pathology, spinal stenosis, nerve root compression, and other structural abnormalities without administration of contrast material.

63075 View procedure details

Common coding pitfalls

The recurring mistakes coders make with M47.10 and adjacent codes.

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

Defaulting to M47.10 when imaging or the note clearly identifies the spinal level — always assign the site-specific code (M47.12 for cervical, M47.16 for lumbar, etc.) when region is documented.
Confusing spondylotic myelopathy (M47.1x) with disc-disorder myelopathy (M50.0x, M51.04–M51.06) — if the myelopathy is driven by disc herniation or disc degeneration rather than bony spondylosis, the M50/M51 range is correct.
Using M47.10 alongside a vertebral subluxation code — the Tabular Excludes1 note prohibits reporting M47.1x with M43.3–M43.5X9 on the same claim.
Coding M47.10 when only radiculopathy (nerve root, not cord) is documented — radiculopathy belongs in M47.2x or M54.1x, not M47.1x.
Submitting M47.10 for a patient with neck or back pain and degenerative changes on imaging but no documented myelopathy signs — myelopathy requires a clinical diagnosis, not just radiographic stenosis.

Clinical context

Source · Editorial summary grounded in 8 cited references ↓

M47.10 is the fallback code within the M47.1 subcategory when spondylogenic myelopathy is confirmed but the affected spinal region is not documented. The M47.1x family covers spondylosis that has progressed to true spinal cord involvement — not simply nerve root irritation (that's M47.2x) and not degenerative change alone (M47.8x). The parent note in the Tabular List flags an Excludes1 for vertebral subluxation (M43.3–M43.5X9), meaning you cannot report both simultaneously.

Always pursue a site-specific code first. M47.10 should be a last resort: if imaging or the clinical note names any spinal region, use the corresponding site-specific code (M47.11 occipito-atlanto-axial, M47.12 cervical, M47.13 cervicothoracic, M47.14 thoracic, M47.15 thoracolumbar, M47.16 lumbar). Cervical spondylotic myelopathy is the most common presentation in orthopedic and spine surgery practice; landing on M47.10 instead of M47.12 is a documentation failure, not a legitimate coding choice.

Do not use M47.10 when myelopathy is attributable to disc herniation or disc degeneration — that maps to M50.0x (cervical disc disorder with myelopathy) or M51.04–M51.06 (thoracic/lumbar disc disorders with myelopathy). Spondylosis-driven and disc-driven myelopathy are distinct pathomechanisms requiring separate codes.

Sibling codes

Other billable codes under M47.1 (laterality / anatomic variants).

M47.14

Other spondylosis with myelopathy, thoracic region

M47.11

Oth spondylosis w myelopathy, occipito-atlanto-axial region

M47.15

Other spondylosis with myelopathy, thoracolumbar region

M47.16

Other spondylosis with myelopathy, lumbar region

M47.12

Other spondylosis with myelopathy, cervical region

M47.13

Other spondylosis with myelopathy, cervicothoracic region

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 8 cited references ↓

01When is M47.10 the correct code rather than a site-specific M47.1x code?

Only when the treating provider's documentation genuinely does not identify the spinal region involved. In practice this is rare — if any imaging report or physical exam note names a level or region, assign the corresponding site-specific code (M47.11–M47.16).

02What is the difference between M47.10 and M47.12?

Both represent spondylosis with myelopathy. M47.12 specifies the cervical region; M47.10 leaves the site unspecified. Cervical is by far the most common location for spondylotic myelopathy, so M47.12 is the appropriate code in most spine surgery encounters when the level is documented.

03Can M47.10 be used together with a radiculopathy code?

Spondylotic myelopathy and radiculopathy can coexist and may be coded together when both are clinically documented. Use M47.1x for the myelopathy component and the appropriate M47.2x or M54.1x code for radiculopathy — they are not mutually exclusive, unlike the Excludes1 pairing with vertebral subluxation codes.

04How do I distinguish M47.10 from M50.00 (cervical disc disorder with myelopathy, unspecified level)?

The key is the underlying pathomechanism documented by the provider. M47.1x applies when myelopathy is caused by spondylosis — bony osteophytes, facet hypertrophy, disc-osteophyte complex. M50.0x applies when myelopathy results from cervical disc herniation or disc degeneration. When both mechanisms coexist, query the provider for the primary driver or code both if each is independently documented.

05Does M47.10 require a 7th-character extension?

No. M47.10 is a 5-character M-code in Chapter 13 and does not use 7th-character extensions. Seventh-character modifiers (A, D, S) apply to injury codes (S-codes), not to musculoskeletal disease codes.

06Which CPT procedures are most commonly linked to M47.10 in spine surgery billing?

Anterior cervical discectomy and fusion (22551, 22552), posterior cervical laminectomy or laminoplasty (63045, 63048), cervical corpectomy (63081), and lumbar laminectomy for stenosis with myelopathy (63045–63048 at the relevant level) are the most common surgical pairings. MRI spine (72141, 72146, 72148) supports the diagnosis at the pre-operative stage.

07Will payers accept M47.10 on a surgical claim, or does it trigger a denial?

M47.10 is a valid billable code and will process, but some payers — particularly for high-acuity spine procedures — apply clinical edit rules expecting site-specific diagnosis codes. Using M47.10 on a fusion or laminectomy claim when the operative report names a spinal level increases audit risk and may prompt a request for records to confirm medical necessity.

Sources & references

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

Mira AI Scribe

Mira captures the spinal region by name, objective myelopathy signs (hyperreflexia, clonus, Babinski, gait disturbance), and MRI findings (cord compression level, T2 signal change) during the encounter. That documentation drives assignment of a site-specific M47.1x code and prevents the unspecified M47.10 fallback — which can trigger payer requests for additional documentation on high-acuity surgical claims.

See how Mira captures M47.10 documentation