Diagnosis Code M21
Information for Medical Professionals
References found for the code M21 in the Index of Diseases and Injuries:
- Type 1 Excludes Notes: Type 1 Excludes Notes
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.
- acquired absence of limb (Z89.-)
- congenital absence of limbs (Q71-Q73)
- congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74)
- Type 2 Excludes Notes: Type 2 Excludes Notes
A type 2 Excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- acquired deformities of fingers or toes (M20.-)
- coxa plana (M91.2)
Information for Patients
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
- Hypermobile joints (Medical Encyclopedia)
- Joint pain (Medical Encyclopedia)
- Joint swelling (Medical Encyclopedia)
- Joint x-ray (Medical Encyclopedia)
- Limited range of motion (Medical Encyclopedia)
- Steroid injections - tendon, bursa, joint (Medical Encyclopedia)