Diagnosis Code M23
Information for Medical Professionals
References found for the code M23 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.
- ankylosis (M24.66)
- current injury - SEE “See”
The “see” instruction following a main term in the Alphabetic Index indicates that another term should be referenced. It is necessary to go to the main term referenced with the “see” note to locate the correct code. injury of knee and lower leg (S80-S89)
- deformity of knee (M21.-)
- osteochondritis dissecans (M93.2)
- recurrent dislocation or subluxation of joints (M24.4)
- recurrent dislocation or subluxation of patella (M22.0-M22.1)
Information for Patients
Knee Injuries and Disorders
Your knee joint is made up of bone, cartilage, ligaments and fluid. Muscles and tendons help the knee joint move. When any of these structures is hurt or diseased, you have knee problems. Knee problems can cause pain and difficulty walking.
Knee problems are very common, and they occur in people of all ages. Knee problems can interfere with many things, from participation in sports to simply getting up from a chair and walking. This can have a big impact on your life.
The most common disease affecting the knee is osteoarthritis. The cartilage in the knee gradually wears away, causing pain and swelling.
Injuries to ligaments and tendons also cause knee problems. A common injury is to the anterior cruciate ligament (ACL). You usually injure your ACL by a sudden twisting motion. ACL and other knee injuries are common sports injuries.
Treatment of knee problems depends on the cause. In some cases your doctor may recommend knee replacement.
NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases
- ACL reconstruction
- Anterior crucate ligament (ACL) injury
- Anterior cruciate ligament (ACL) injury -- aftercare
- Anterior knee pain
- Baker's cyst
- Broken kneecap - aftercare
- Collateral ligament (CL) injury -- aftercare
- Getting your home ready - knee or hip surgery
- Knee arthroscopy
- Knee MRI scan
- Knee pain
- Meniscus tears -- aftercare
- Osgood-Schlatter disease