ICD-10 Code M05.859

Other rheumatoid arthritis with rheumatoid factor of unspecified hip

Version 2019 Billable Code
ICD-10:M05.859
Short Description:Oth rheumatoid arthritis with rheumatoid factor of unsp hip
Long Description:Other rheumatoid arthritis with rheumatoid factor of unspecified hip

Valid for Submission

ICD-10 M05.859 is a billable code used to specify a medical diagnosis of other rheumatoid arthritis with rheumatoid factor of unspecified hip. The code is valid for the year 2019 for the submission of HIPAA-covered transactions.

Code Classification

  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Inflammatory polyarthropathies (M05-M14)
      • Rheumatoid arthritis with rheumatoid factor (M05)

Information for Medical Professionals

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). The diagnosis code M05.859 is grouped in the following groups for version MS-DRG V36.0 applicable from 10/01/2018 through 09/30/2019.

  • 545 - CONNECTIVE TISSUE DISORDERS WITH MCC
  • 546 - CONNECTIVE TISSUE DISORDERS WITH CC
  • 547 - CONNECTIVE TISSUE DISORDERS WITHOUT CC/MCC

Convert M05.859 to ICD-9

The following crosswalk between ICD-10 to ICD-9 is based based on the General Equivalence Mappings (GEMS) information:

  • 714.0 - Rheumatoid arthritis (Approximate Flag)

Information for Patients


Rheumatoid Arthritis

Also called: RA

Rheumatoid arthritis (RA) is a form of arthritis that causes pain, swelling, stiffness and loss of function in your joints. It can affect any joint but is common in the wrist and fingers.

More women than men get rheumatoid arthritis. It often starts in middle age and is most common in older people. You might have the disease for only a short time, or symptoms might come and go. The severe form can last a lifetime.

Rheumatoid arthritis is different from osteoarthritis, the common arthritis that often comes with older age. RA can affect body parts besides joints, such as your eyes, mouth and lungs. RA is an autoimmune disease, which means the arthritis results from your immune system attacking your body's own tissues.

No one knows what causes rheumatoid arthritis. Genes, environment, and hormones might contribute. Treatments include medicine, lifestyle changes, and surgery. These can slow or stop joint damage and reduce pain and swelling.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

  • Collagen vascular disease (Medical Encyclopedia)
  • Felty syndrome (Medical Encyclopedia)
  • Rheumatoid arthritis (Medical Encyclopedia)
  • Rheumatoid factor (RF) (Medical Encyclopedia)
  • Rheumatoid lung disease (Medical Encyclopedia)

[Read More]

Rheumatoid arthritis Rheumatoid arthritis is a disease that causes chronic abnormal inflammation, primarily affecting the joints. The most common signs and symptoms are pain, swelling, and stiffness of the joints. Small joints in the hands and feet are involved most often, although larger joints (such as the shoulders, hips, and knees) may become involved later in the disease. Joints are typically affected in a symmetrical pattern; for example, if joints in the hand are affected, both hands tend to be involved. People with rheumatoid arthritis often report that their joint pain and stiffness is worse when getting out of bed in the morning or after a long rest.Rheumatoid arthritis can also cause inflammation of other tissues and organs, including the eyes, lungs, and blood vessels. Additional signs and symptoms of the condition can include a loss of energy, a low fever, weight loss, and a shortage of red blood cells (anemia). Some affected individuals develop rheumatoid nodules, which are firm lumps of noncancerous tissue that can grow under the skin and elsewhere in the body.The signs and symptoms of rheumatoid arthritis usually appear in mid- to late adulthood. Many affected people have episodes of symptoms (flares) followed by periods with no symptoms (remissions) for the rest of their lives. In severe cases, affected individuals have continuous health problems related to the disease for many years. The abnormal inflammation can lead to severe joint damage, which limits movement and can cause significant disability.
[Read More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.