M46.1
BillableSacroiliitis, not elsewhere classified
Sacroiliitis, not elsewhere classified
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- •arthropathic psoriasisL40.5
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •compartment syndrome (traumatic)A-)T79
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Related Codes(7)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(22)
SNOMED CT
- Inflammation of sacroiliac joint55146009
- Sacroiliac joint inflamed55146009
- Sacroiliitis55146009
- Inflammation of right sacroiliac joint1303822003
- Right sacroiliitis1303822003
- Sacroiliitis of right sacroiliac joint1303822003
- Inflammation of left sacroiliac joint1303823008
- Sacroiliitis of left sacroiliac joint1303823008
- Bilateral sacroiliitis1303824002
- Inflammation of bilateral sacroiliac joints1303824002
- Inflammation of both sacroiliac joints1303824002
Clinical Terms
- Sacroiliac joint inflamed
- Sacroiliitis of right sacroiliac joint
- Inflammation of right sacroiliac joint
- Inflammation of sacroiliac joint
- Right sacroiliitis
- Sacroiliitis of left sacroiliac joint
- Inflammation of bilateral sacroiliac joints
- Inflammation of left sacroiliac joint
- Inflammation of both sacroiliac joints
- Bilateral sacroiliitis
Frequently Asked Questions
What is the ICD-10 code for sacroiliitis, not elsewhere classified?
The ICD-10-CM code for sacroiliitis, not elsewhere classified is M46.1. The full clinical description is "Sacroiliitis, not elsewhere classified". M46.1 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code M46.1 mean?
ICD-10-CM code M46.1 represents “Sacroiliitis, not elsewhere classified”. It is classified under Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue and is a billable/specific code that can be used on a claim.
Is M46.1 a billable code?
Yes, M46.1 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is M46.1 in?
M46.1 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What SNOMED CT codes does M46.1 map to?
M46.1 maps to 4 SNOMED CT concepts: 1303824002, 1303823008, 1303822003, 55146009. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for M46.1?
M46.1 is linked to 1 UMLS Concept Unique Identifier: C0868862. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M46.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like sacroiliitis, not elsewhere classified affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of M46.1?
M46.1 maps to the ICD-11 code: FA92.01 (Sacroiliitis, not elsewhere classified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.