ICD-10-CM 2027
ICD-10 code for spinal enthesopathy
From the official ICD-10-CM alphabetic index entry “Enthesopathy (peripheral) › spinal”. Page updated September 29, 2026.
About coding spinal enthesopathy
The ICD-10-CM code for spinal enthesopathy is M46.00 (Spinal enthesopathy, site unspecified). The official index lists 9 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M46.00.
Within M46.0, choose M46.00 (site unspecified) only when documentation doesn't support a more specific option: occipito-atlanto-axial region (M46.01), cervical region (M46.02), cervicothoracic region (M46.03), thoracic region (M46.04), thoracolumbar region (M46.05), lumbar region (M46.06), lumbosacral region (M46.07), sacral and sacrococcygeal region (M46.08) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 551 (Medical Back Problems with MCC, relative weight 1.6358) and DRG 552 (Medical Back Problems without MCC, relative weight 0.9584), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific spinal enthesopathy codes (official index)
- cervical region M46.02 — Spinal enthesopathy, cervical region
- cervicothoracic region M46.03 — Spinal enthesopathy, cervicothoracic region
- lumbar region M46.06 — Spinal enthesopathy, lumbar region
- lumbosacral region M46.07 — Spinal enthesopathy, lumbosacral region
- multiple sites M46.09 — Spinal enthesopathy, multiple sites in spine
- occipito-atlanto-axial region M46.01 — Spinal enthesopathy, occipito-atlanto-axial region
- sacrococcygeal region M46.08 — Spinal enthesopathy, sacral and sacrococcygeal region
- thoracic region M46.04 — Spinal enthesopathy, thoracic region
- thoracolumbar region M46.05 — Spinal enthesopathy, thoracolumbar region
Common questions about spinal enthesopathy ICD-10 codes
What is the ICD-10 code for spinal enthesopathy?
- M46.00 — Spinal enthesopathy, site unspecified. More specific codes apply when the documentation supports them: M46.02, M46.03, M46.06, M46.07 and others below.
What is the ICD-10 code for cervical region spinal enthesopathy?
- M46.02 — Spinal enthesopathy, cervical region.
What is the ICD-10 code for cervicothoracic region spinal enthesopathy?
- M46.03 — Spinal enthesopathy, cervicothoracic region.
What is the ICD-10 code for lumbar region spinal enthesopathy?
- M46.06 — Spinal enthesopathy, lumbar region.
What is the ICD-10 code for lumbosacral region spinal enthesopathy?
- M46.07 — Spinal enthesopathy, lumbosacral region.
What is the ICD-10 code for multiple sites spinal enthesopathy?
- M46.09 — Spinal enthesopathy, multiple sites in spine.
What is the ICD-10 code for occipito-atlanto-axial region spinal enthesopathy?
- M46.01 — Spinal enthesopathy, occipito-atlanto-axial region.
Is M46.00 billable?
- Yes. M46.00 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M46.00 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M46.00 as a principal diagnosis.
Is M46.00 a CC or MCC?
- No. M46.00 is neither a CC nor an MCC under MS-DRG v44.0.