M46.1 – Sacroiliitis, not elsewhere classified
ICD-10-CM 2027 diagnosis code · Spondylopathies
ICD-10-CM code
M46.1
- Code
M46.1(claims format:M461)- Description
- Sacroiliitis, not elsewhere classified
- Billable
- Yes – valid for HIPAA-covered transactions
- 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
Index terms for M46.1
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in M46
- M46.0 – Spinal enthesopathyHeader
- M46.2 – Osteomyelitis of vertebraHeader
- M46.3 – Infection of intervertebral disc (pyogenic)Header
- M46.4 – Discitis, unspecifiedHeader
- M46.5 – Other infective spondylopathiesHeader
- M46.8 – Other specified inflammatory spondylopathiesHeader
- M46.9 – Unspecified inflammatory spondylopathyHeader
Frequently asked questions
What is ICD-10 code M46.1?
M46.1 is the ICD-10-CM code for sacroiliitis, not elsewhere classified, in the block M45-M49 (Spondylopathies).
Is M46.1 a billable code?
Yes. M46.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does M46.1 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.