M23: ICD10 Code for Internal derangement of knee

M23 refers to Internal derangement of knee, which covers acquired deformities, mechanical derangements, and nonspecific joint disorders that may result from trauma, chronic instability, or degenerative changes over time.

Symptoms

• Joint instability – Often present in patellar disorders (M22) and knee derangements (M23)
• Visible deformity – Common in fingers, toes (M20), or limb malalignments (M21)
• Pain and swelling – Especially with joint movement or weight-bearing
• Locking or clicking – Characteristic of internal derangements like meniscal tears (M23)
• Restricted range of motion – Seen in various joint derangements (M24, M25)

Diagnosis

Diagnosis of Internal derangement of knee typically involves clinical examination, stress testing for joint laxity, radiography (X-rays), MRI for soft tissue assessment (menisci, ligaments), and sometimes functional movement evaluations.

ICD10 Code Usage

ICD10 code M23 is used by orthopedic surgeons, sports medicine specialists, podiatrists, physiotherapists, and rehabilitation teams for documenting joint deformities, mechanical issues, and chronic instability requiring bracing, therapy, or surgery.

Related Codes

• M20 – Acquired deformities of fingers and toes
• M21 – Other acquired deformities of limbs
• M22 – Disorder of patella
• M24 – Other specific joint derangements
• M25 – Other joint disorder, not elsewhere classified

FAQs

Q1: What is ICD10 code M23?
A: It refers to Internal derangement of knee, covering acquired deformities, instability, or nonspecific disorders affecting joint mechanics and alignment.

Q2: How does M23 differ from M24?
A: M23 focuses on internal derangements of the knee (like meniscus or ligament injuries), while M24 includes derangements in other joints.

Q3: What are examples of acquired deformities (M20, M21)?
A: Examples include bunions, hammertoes, knock knees, bow legs, and other acquired limb or digit misalignments.

Q4: What treatments are available?
A: Treatments range from physiotherapy, orthotics, joint injections, bracing, to surgical realignment or repair procedures.

Q5: Who typically manages these conditions?
A: Orthopedic surgeons, sports medicine doctors, podiatrists (for toes), and physiotherapists.

Conclusion

ICD10 code M23 plays a crucial role in accurately diagnosing and treating Internal derangement of knee, allowing for timely interventions that can restore function, reduce pain, and prevent further joint deterioration.