M89.50 Osteolysis, unspecified site

Billable ICD-10-CM code, FY2026.

Applies from M89.5 Osteolysis

Excludes2 (not included here)

• periprosthetic osteolysis of internal prosthetic joint (T84.05-)

Use additional code

• code to identify major osseous defect, if applicable (M89.7-)

MS-DRG index

Defines the logic of DRG(s) 564-566 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 733.99 Other disorders of bone and cartilage (approximate)

Code annotations containing back-references to M89.50

Back-references to M89.5

• Code First: M89.7 Major osseous defect ("osteolysis (M89.5-)")

Diagnosis Index entries for M89.50

• Osteolysis

Nearby codes

• M89.472 Other hypertrophic osteoarthropathy, left ankle and foot
• M89.479 Other hypertrophic osteoarthropathy, unspecified ankle and foot
• M89.48 Other hypertrophic osteoarthropathy, other site
• M89.49 Other hypertrophic osteoarthropathy, multiple sites
• M89.5 Osteolysis
• M89.50 Osteolysis, unspecified site (this code)
• M89.51 Osteolysis, shoulder
• M89.511 Osteolysis, right shoulder
• M89.512 Osteolysis, left shoulder
• M89.519 Osteolysis, unspecified shoulder
• M89.52 Osteolysis, upper arm