ICD-10-CM Code M79.0

Rheumatism, unspecified

Version 2020 Billable Code

Valid for Submission

M79.0 is a billable code used to specify a medical diagnosis of rheumatism, unspecified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code M79.0 might also be used to specify conditions or terms like fibroblastic rheumatism, hand rheumatism, psychosomatic rheumatism, rheumatism, rheumatism, excluding the back, rheumatology disorder monitoring status, etc

Short Description:Rheumatism, unspecified
Long Description:Rheumatism, unspecified

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 M79.0:

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

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 M79.0 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:

  • Fibroblastic rheumatism
  • Hand rheumatism
  • Psychosomatic rheumatism
  • Rheumatism
  • Rheumatism, excluding the back
  • Rheumatology disorder monitoring status
  • Rheumatology disorder treatment changed
  • Rheumatology disorder treatment started
  • Rheumatology symptom change
  • Secondary autoimmune hemolytic anemia
  • Secondary autoimmune hemolytic anemia co-occurrent and due to rheumatic disorder

Clinical Information

  • ADIPOSIS DOLOROSA-. a rare disease characterized by multiple tumor like fatty deposits that press on nerves in various sites causing pain and weakness. often these lipoma like structures are located on the trunk and limbs but not on the face and hands.
  • FIBROMYALGIA-. a common nonarticular rheumatic syndrome characterized by myalgia and multiple points of focal muscle tenderness to palpation trigger points. muscle pain is typically aggravated by inactivity or exposure to cold. this condition is often associated with general symptoms such as sleep disturbances fatigue stiffness headaches and occasionally depression. there is significant overlap between fibromyalgia and the chronic fatigue syndrome fatigue syndrome chronic. fibromyalgia may arise as a primary or secondary disease process. it is most frequent in females aged 20 to 50 years. from adams et al. principles of neurology 6th ed p1494 95
  • POLYMYALGIA RHEUMATICA-. a syndrome in the elderly characterized by proximal joint and muscle pain high erythrocyte sedimentation rate and a self limiting course. pain is usually accompanied by evidence of an inflammatory reaction. women are affected twice as commonly as men and caucasians more frequently than other groups. the condition is frequently associated with giant cell arteritis and some theories pose the possibility that the two diseases arise from a single etiology or even that they are the same entity.
  • RHEUMATIC FEVER-. a febrile disease occurring as a delayed sequela of infections with streptococcus pyogenes. it is characterized by multiple focal inflammatory lesions of the connective tissue structures such as the heart blood vessels and joints polyarthritis and brain and by the presence of aschoff bodies in the myocardium and skin.
  • RHEUMATIC DISEASES-. disorders of connective tissue especially the joints and related structures characterized by inflammation degeneration or metabolic derangement.

Diagnostic Related Groups

The ICD-10 code M79.0 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 M79.0 to ICD-9

Code Classification

  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Other soft tissue disorders (M70-M79)
      • Oth and unsp soft tissue disorders, not elsewhere classified (M79)

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

Connective Tissue Disorders

Your connective tissue supports many different parts of your body, such as your skin, eyes, and heart. It is like a "cellular glue" that gives your body parts their shape and helps keep them strong. It also helps some of your tissues do their work. It is made of many kinds of proteins. Cartilage and fat are types of connective tissue.

Over 200 disorders that impact connective tissue. There are different types:

  • Genetic disorders, such as Ehlers-Danlos syndrome, Marfan syndrome, and osteogenesis imperfecta
  • Autoimmune disorders, such as lupus and scleroderma
  • Cancers, like some types of soft tissue sarcoma

Each disorder has its own symptoms and needs different treatment.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

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Joint Disorders

A joint is where two or more bones come together, like the knee, hip, elbow, or shoulder. Joints can be damaged by many types of injuries or diseases, including

  • Arthritis - inflammation of a joint. It causes pain, stiffness, and swelling. Over time, the joint can become severely damaged.
  • Bursitis - inflammation of a fluid-filled sac that cushions the joint
  • Dislocations - injuries that force the ends of the bones out of position

Treatment of joint problems depends on the cause. If you have a sports injury, treatment often begins with the RICE (Rest, Ice, Compression, and Elevation) method to relieve pain, reduce swelling, and speed healing. Other possible treatments include pain relievers, keeping the injured area from moving, rehabilitation, and sometimes surgery. For arthritis, injuries, or other diseases, you may need joint replacement surgery to remove the damaged joint and put in a new one.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

[Learn More]