M46.4 – Discitis, unspecified
ICD-10-CM 2027 diagnosis code · Spondylopathies
ICD-10-CM code
M46.4
- Code
M46.4(claims format:M464)- Description
- Discitis, unspecified
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M45-M49 Spondylopathies
- Parent codes
- M46
Billable codes under M46.4
M46.4 is a header code and cannot be used on claims. Choose the most specific code:
- M46.40 – Discitis, unspecified, site unspecifiedBillable
- M46.41 – Discitis, unspecified, occipito-atlanto-axial regionBillable
- M46.42 – Discitis, unspecified, cervical regionBillable
- M46.43 – Discitis, unspecified, cervicothoracic regionBillable
- M46.44 – Discitis, unspecified, thoracic regionBillable
- M46.45 – Discitis, unspecified, thoracolumbar regionBillable
- M46.46 – Discitis, unspecified, lumbar regionBillable
- M46.47 – Discitis, unspecified, lumbosacral regionBillable
- M46.48 – Discitis, unspecified, sacral and sacrococcygeal regionBillable
- M46.49 – Discitis, unspecified, multiple sites in spineBillable
Related codes in M46
- M46.0 – Spinal enthesopathyHeader
- M46.1 – Sacroiliitis, not elsewhere classifiedBillable
- M46.2 – Osteomyelitis of vertebraHeader
- M46.3 – Infection of intervertebral disc (pyogenic)Header
- M46.5 – Other infective spondylopathiesHeader
- M46.8 – Other specified inflammatory spondylopathiesHeader
- M46.9 – Unspecified inflammatory spondylopathyHeader
Frequently asked questions
What is ICD-10 code M46.4?
M46.4 is the ICD-10-CM code for discitis, unspecified, in the block M45-M49 (Spondylopathies).
Is M46.4 a billable code?
No. M46.4 is a header code with more specific child codes; report one of the billable codes listed above.
What category does M46.4 belong to?
It belongs to category M46 – Other inflammatory spondylopathies.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.