M46 — Other inflammatory spondylopathies
Not billable
Is M46 billable?
No — M46 is a non-billable header code. M46 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 60 billable codes beneath M46.
Billable codes under this header
- M46.1Sacroiliitis, not elsewhere classified
- M46.00Spinal enthesopathy, site unspecified
- M46.01Spinal enthesopathy, occipito-atlanto-axial region
- M46.02Spinal enthesopathy, cervical region
- M46.03Spinal enthesopathy, cervicothoracic region
- M46.04Spinal enthesopathy, thoracic region
- M46.05Spinal enthesopathy, thoracolumbar region
- M46.06Spinal enthesopathy, lumbar region
- M46.07Spinal enthesopathy, lumbosacral region
- M46.08Spinal enthesopathy, sacral and sacrococcygeal region
- M46.09Spinal enthesopathy, multiple sites in spine
- M46.20Osteomyelitis of vertebra, site unspecified
- M46.21Osteomyelitis of vertebra, occipito-atlanto-axial region
- M46.22Osteomyelitis of vertebra, cervical region
- M46.23Osteomyelitis of vertebra, cervicothoracic region
- M46.24Osteomyelitis of vertebra, thoracic region
- M46.25Osteomyelitis of vertebra, thoracolumbar region
- M46.26Osteomyelitis of vertebra, lumbar region
- M46.27Osteomyelitis of vertebra, lumbosacral region
- M46.28Osteomyelitis of vertebra, sacral and sacrococcygeal region
- M46.30Infection of intervertebral disc (pyogenic), site unspecified
- M46.31Infection of intervertebral disc (pyogenic), occipito-atlanto-axial region
- M46.32Infection of intervertebral disc (pyogenic), cervical region
- M46.33Infection of intervertebral disc (pyogenic), cervicothoracic region
- M46.34Infection of intervertebral disc (pyogenic), thoracic region
- M46.35Infection of intervertebral disc (pyogenic), thoracolumbar region
- M46.36Infection of intervertebral disc (pyogenic), lumbar region
- M46.37Infection of intervertebral disc (pyogenic), lumbosacral region
- M46.38Infection of intervertebral disc (pyogenic), sacral and sacrococcygeal region
- M46.39Infection of intervertebral disc (pyogenic), multiple sites in spine
- M46.40Discitis, unspecified, site unspecified
- M46.41Discitis, unspecified, occipito-atlanto-axial region
- M46.42Discitis, unspecified, cervical region
- M46.43Discitis, unspecified, cervicothoracic region
- M46.44Discitis, unspecified, thoracic region
- M46.45Discitis, unspecified, thoracolumbar region
- M46.46Discitis, unspecified, lumbar region
- M46.47Discitis, unspecified, lumbosacral region
- M46.48Discitis, unspecified, sacral and sacrococcygeal region
- M46.49Discitis, unspecified, multiple sites in spine
- M46.50Other infective spondylopathies, site unspecified
- M46.51Other infective spondylopathies, occipito-atlanto-axial region
- M46.52Other infective spondylopathies, cervical region
- M46.53Other infective spondylopathies, cervicothoracic region
- M46.54Other infective spondylopathies, thoracic region
- M46.55Other infective spondylopathies, thoracolumbar region
- M46.56Other infective spondylopathies, lumbar region
- M46.57Other infective spondylopathies, lumbosacral region
- M46.58Other infective spondylopathies, sacral and sacrococcygeal region
- M46.59Other infective spondylopathies, multiple sites in spine
- M46.80Other specified inflammatory spondylopathies, site unspecified
- M46.81Other specified inflammatory spondylopathies, occipito-atlanto-axial region
- M46.82Other specified inflammatory spondylopathies, cervical region
- M46.83Other specified inflammatory spondylopathies, cervicothoracic region
- M46.84Other specified inflammatory spondylopathies, thoracic region
- M46.85Other specified inflammatory spondylopathies, thoracolumbar region
- M46.86Other specified inflammatory spondylopathies, lumbar region
- M46.87Other specified inflammatory spondylopathies, lumbosacral region
- M46.88Other specified inflammatory spondylopathies, sacral and sacrococcygeal region
- M46.89Other specified inflammatory spondylopathies, multiple sites in spine
M46 at a glance
| Code | M46 |
|---|---|
| Description | Other inflammatory spondylopathies |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M46, but a patient may have both at the same time. When documentation supports it, M46 and the excluded code may both be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
What codes fall under M46? (8)
- M46.0Spinal enthesopathynot billable
- M46.1Sacroiliitis, not elsewhere classified
- M46.2Osteomyelitis of vertebranot billable
- M46.3Infection of intervertebral disc (pyogenic)not billable
- M46.4Discitis, unspecifiednot billable
- M46.5Other infective spondylopathiesnot billable
- M46.8Other specified inflammatory spondylopathiesnot billable
- M46.9Unspecified inflammatory spondylopathynot billable
How long has M46 existed?
M46 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with M46?
ICD-10-CM declares these codes mutually exclusive with M46 — exactly one of each pair can be correct for a given encounter.