M65.90
BillableUnspecified synovitis and tenosynovitis, unspecified site
Unspecified synovitis and tenosynovitis, unspecified site
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- •chronic crepitant synovitis of hand and wristM70.0
- current injury - see injury of ligament or tendon by body region
- •soft tissue disorders related to use, overuse and pressureM70
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(9)
M65.91Unspecified synovitis and tenosynovitis, shoulder
M65.92Unspecified synovitis and tenosynovitis, upper arm
M65.93Unspecified synovitis and tenosynovitis, forearm
M65.94Unspecified synovitis and tenosynovitis, hand
M65.95Unspecified synovitis and tenosynovitis, thigh
M65.96Unspecified synovitis and tenosynovitis, lower leg
M65.97Unspecified synovitis and tenosynovitis, ankle and foot
M65.98Unspecified synovitis and tenosynovitis, other site
M65.99Unspecified synovitis and tenosynovitis, multiple sites
Also Known As / Clinical Terms(44)
SNOMED CT
- Synovitis AND/OR tenosynovitis associated with another disease4248008
- SAPHO - Synovitis, acne, pustulosis palmaris, hyperostosis, osteomyelitis syndrome60684003
- SAPHO syndrome60684003
- Synovitis acne pustulosis hyperostosis osteomyelitis syndrome60684003
- Inflammation of tendon sheath67801009
- Tendinous synovitis67801009
- Tendovaginitis67801009
- Tenontolemmitis67801009
- Tenosynovitis67801009
- Tenovaginitis67801009
- Tendon sheath crepitus123586005
- Synovitis and tenosynovitis202900007
- Enthesitis359643005
- Synovitis416209007
- Chronic synovitis704174008
- Synovitis of ankle joint784545009
- Tenoperiostitis1217320008
- Capsulitis of left ankle15688041000119101
- Chronic hemophilia synovitis711181000124108
- Chronic synovitis due to haemarthrosis711181000124108
- Chronic synovitis due to hemarthrosis711181000124108
- Synovitis of left ankle joint1075891000119105
Clinical Terms
- Chronic synovitis
- Chronic synovitis due to haemarthrosis
- Tenontolemmitis
- SAPHO syndrome
- Tenovaginitis
- Tendinous synovitis
- Enthesitis
- Synovitis of ankle joint
- SAPHO - Synovitis, acne, pustulosis palmaris, hyperostosis, osteomyelitis syndrome
- Synovitis
- Tenoperiostitis
- Synovitis acne pustulosis hyperostosis osteomyelitis syndrome
- Chronic hemophilia synovitis
- Synovitis of left ankle joint
- Chronic synovitis due to hemarthrosis
- Tenosynovitis
- Synovitis AND/OR tenosynovitis associated with another disease
- Inflammation of tendon sheath
- Tendon sheath crepitus
- Tendovaginitis
- Capsulitis of left ankle
Frequently Asked Questions
What is the ICD-10 code for unspecified synovitis and tenosynovitis, unspecified site?
The ICD-10-CM code for unspecified synovitis and tenosynovitis, unspecified site is M65.90. The full clinical description is "Unspecified synovitis and tenosynovitis, unspecified site". M65.90 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code M65.90 mean?
ICD-10-CM code M65.90 represents “Unspecified synovitis and tenosynovitis, unspecified site”. 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 M65.90 a billable code?
Yes, M65.90 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is M65.90 in?
M65.90 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M65.90?
M65.90 has Excludes1 notes indicating codes that cannot be used together with it, including: chronic crepitant synovitis of hand and wrist (M70.0-); current injury - see injury of ligament or tendon by body region; soft tissue disorders related to use, overuse and pressure (M70.-).
What SNOMED CT codes does M65.90 map to?
M65.90 maps to 13 SNOMED CT concepts: 15688041000119101, 711181000124108, 704174008, 359643005, 67801009, and 8 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for M65.90?
M65.90 is linked to 1 UMLS Concept Unique Identifier: C5886827. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M65.90 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like unspecified synovitis and tenosynovitis, unspecified site 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 M65.90?
There is no direct ICD-11 mapping available for M65.90 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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.