M19.9
Non-billableOsteoarthritis, unspecified site
Osteoarthritis, unspecified site
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- osteoarthritis of spine (M47.-)
- arthrosis of spine (M47.-)
- hallux rigidus (M20.2)
Child Codes (4)
Also Known As / Clinical Terms
UMLS
- Arthritides, DegenerativeC0029408
- Arthritis, DegenerativeC0029408
- Arthritis, degenerativeC0029408
- ArthrosisC0029408
- Degenerative ArthritidesC0029408
- Degenerative ArthritisC0029408
- Degenerative Joint DiseaseC0029408
- Degenerative arthritisC0029408
- Degenerative arthropathyC0029408
- Degenerative joint diseaseC0029408
- Degenerative polyarthritisC0029408
- Degenerative polyarthritis (disorder)C0029408
- Hypertrophic arthritisC0029408
- Hypertrophic polyarthritisC0029408
- OA - OsteoarthritisC0029408
- OA - OsteoarthrosisC0029408
- OsteoarthritidesC0029408
- OsteoarthritisC0029408
- Osteoarthritis (M15-M19)C0029408
- Osteoarthritis (disorder)C0029408
- Osteoarthritis NOSC0029408
- Osteoarthritis deformansC0029408
- Osteoarthritis, unspecified siteC0029408
- OsteoarthrosesC0029408
- OsteoarthrosisC0029408
- Osteoarthrosis deformansC0029408
- Osteoarthrosis, unspecified whether generalized or localizedC0029408
- a oC0029408
- arthritis degenerativeC0029408
- arthritis osteoarthritisC0029408
- arthrosisC0029408
- degenerative arthritisC0029408
- degenerative arthropathyC0029408
- degenerative disease jointC0029408
- degenerative disease jointsC0029408
- degenerative diseases jointC0029408
- degenerative joint diseaseC0029408
- degenerative osteoarthritisC0029408
- hypertrophic arthritisC0029408
- o aC0029408
- oa osteoarthritisC0029408
- oasC0029408
- osteoarthritisC0029408
- osteoarthritis arthritisC0029408
- osteoarthritis degenerativeC0029408
- osteoarthrosisC0029408
Frequently Asked Questions
What is ICD-10 code M19.9?
ICD-10-CM code M19.9 represents "Osteoarthritis, unspecified site". It is a non-billable header code — use a more specific child code for billing purposes.
Is M19.9 a billable code?
No, M19.9 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 4 child codes under M19.9.
What chapter is M19.9 in?
M19.9 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M19.9?
M19.9 has Excludes1 notes indicating codes that cannot be used together with it, including: polyarthritis (M15.-).
What are the subcategories under M19.9?
M19.9 has 4 child codes, including: M19.90 (Unspecified osteoarthritis, unspecified site), M19.91 (Primary osteoarthritis, unspecified site), M19.92 (Post-traumatic osteoarthritis, unspecified site), M19.93 (Secondary osteoarthritis, unspecified site).
What are the UMLS CUIs for M19.9?
M19.9 is linked to 1 UMLS Concept Unique Identifier: C0029408. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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.