ICD-10-CM Code M19.90

Unspecified osteoarthritis, unspecified site

Version 2020 Billable Code

Valid for Submission

M19.90 is a billable code used to specify a medical diagnosis of unspecified osteoarthritis, unspecified site. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code M19.90 might also be used to specify conditions or terms like arthritis, arthritis co-occurrent and due to crohn's disease, arthritis/arthrosis, arthropathy in crohn's disease, bilateral arthropathy of sacroiliac joints, bilateral osteoarthritis of sacroiliac joints, etc

Short Description:Unspecified osteoarthritis, unspecified site
Long Description:Unspecified osteoarthritis, unspecified site

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code M19.90:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Arthrosis NOS
  • Arthritis NOS
  • Osteoarthritis NOS

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code M19.90 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Arthritis
  • Arthritis co-occurrent and due to Crohn's disease
  • Arthritis/arthrosis
  • Arthropathy in Crohn's disease
  • Bilateral arthropathy of sacroiliac joints
  • Bilateral osteoarthritis of sacroiliac joints
  • Chronic osteoarthritis
  • Degenerative polyarthritis
  • Disorder of left sacroiliac joint
  • Disorder of right sacroiliac joint
  • Elbow joint inflamed
  • Endemic osteoarthritis
  • Exacerbation of osteoarthritis
  • Idiopathic osteoarthritis
  • Inflamed joint
  • Localized osteoarthrosis
  • Localized osteoarthrosis uncertain if primary OR secondary
  • Malemud disease
  • Mechanical joint disorder
  • Metatarsophalangeal joint inflamed
  • Mild spondyloepiphyseal dysplasia due to COL2A1 mutation with early onset osteoarthritis
  • Oligoosteoarthritis
  • Opera glass deformity of hands
  • Osteoarthritis
  • Osteoarthritis deformans
  • Osteoarthritis of left sacroiliac joint
  • Osteoarthritis of left temporomandibular joint
  • Osteoarthritis of right sacroiliac joint
  • Osteoarthritis of right sternoclavicular joint
  • Osteoarthritis of right temporomandibular joint
  • Osteoarthritis of spinal facet joint
  • Polyserositis
  • Undifferentiated inflammatory arthritis
  • Undifferentiated inflammatory oligoarthritis
  • Wrist joint inflamed

Diagnostic Related Groups

The ICD-10 code M19.90 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Convert M19.90 to ICD-9

  • 715.30 - Loc osteoarth NOS-unspec (Approximate Flag)
  • 715.90 - Osteoarthros NOS-unspec (Approximate Flag)

Code Classification

  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Osteoarthritis (M15-M19)
      • Other and unspecified osteoarthritis (M19)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Osteoarthritis is the most common form of arthritis. It causes pain, swelling, and reduced motion in your joints. It can occur in any joint, but usually it affects your hands, knees, hips or spine.

Osteoarthritis breaks down the cartilage in your joints. Cartilage is the slippery tissue that covers the ends of bones in a joint. Healthy cartilage absorbs the shock of movement. When you lose cartilage, your bones rub together. Over time, this rubbing can permanently damage the joint.

Risk factors for osteoarthritis include

  • Being overweight
  • Getting older
  • Injuring a joint

No single test can diagnose osteoarthritis. Most doctors use several methods, including medical history, a physical exam, x-rays, or lab tests.

Treatments include exercise, medicines, and sometimes surgery.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

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