M85.5
Non-billableAneurysmal bone cyst
Aneurysmal bone cyst
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
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
- •aneurysmal cyst of jawM27.4
Child Codes (10)
M85.50Aneurysmal bone cyst, unspecified site
M85.51Aneurysmal bone cyst, shoulder
M85.52Aneurysmal bone cyst, upper arm
M85.53Aneurysmal bone cyst, forearm
M85.54Aneurysmal bone cyst, hand
M85.55Aneurysmal bone cyst, thigh
M85.56Aneurysmal bone cyst, lower leg
M85.57Aneurysmal bone cyst, ankle and foot
M85.58Aneurysmal bone cyst, other site
M85.59Aneurysmal bone cyst, multiple sites
Related Codes(8)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(18)
UMLS
- ABCC0152244
- ABC - Aneurysmal bone cystC0152244
- ANEURYSMAL BONE CYSTSC0152244
- Aneurysmal Bone CystC0152244
- Aneurysmal Bone CystsC0152244
- Aneurysmal Cyst of BoneC0152244
- Aneurysmal Cyst of the BoneC0152244
- Aneurysmal bone cystC0152244
- Aneurysmal bone cyst (disorder)C0152244
- Aneurysmal bone cyst (morphologic abnormality)C0152244
- Aneurysmal bone cyst, unspecified siteC0152244
- Bone Cyst, AneurysmalC0152244
- Bone Cysts, AneurysmalC0152244
- Cyst, Aneurysmal BoneC0152244
- Cysts, Aneurysmal BoneC0152244
- aneurysmal bone cystC0152244
- aneurysmal bone cystsC0152244
- bone cyst aneurysmalC0152244
Frequently Asked Questions
What is the ICD-10 code for aneurysmal bone cyst?
The ICD-10-CM code for aneurysmal bone cyst is M85.5. The full clinical description is "Aneurysmal bone cyst". M85.5 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code M85.5 mean?
ICD-10-CM code M85.5 represents “Aneurysmal bone cyst”. It is classified under Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue and is a non-billable header code. Use a more specific child code for billing purposes.
Is M85.5 a billable code?
No, M85.5 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 10 child codes under M85.5.
What chapter is M85.5 in?
M85.5 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M85.5?
M85.5 has Excludes1 notes indicating codes that cannot be used together with it, including: osteogenesis imperfecta (Q78.0); osteopetrosis (Q78.2); osteopoikilosis (Q78.8); and 1 more.
What are the subcategories under M85.5?
M85.5 has 10 child codes, including: M85.50 (Aneurysmal bone cyst, unspecified site), M85.51 (Aneurysmal bone cyst, shoulder), M85.52 (Aneurysmal bone cyst, upper arm), M85.53 (Aneurysmal bone cyst, forearm), and 6 more.
What are the UMLS CUIs for M85.5?
M85.5 is linked to 1 UMLS Concept Unique Identifier: C0152244. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M85.5 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like aneurysmal bone cyst 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 M85.5?
M85.5 maps to the ICD-11 code: FB80.6 (Aneurysmal bone cyst).
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
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.