M85.361 Osteitis condensans, right lower leg

Billable ICD-10-CM code, FY2026.

Applies from M85 Other disorders of bone density and structure

Excludes1 (never code together)

• osteogenesis imperfecta (Q78.0)
• osteopetrosis (Q78.2)
• osteopoikilosis (Q78.8)
• polyostotic fibrous dysplasia (Q78.1)

MS-DRG index

Defines the logic of DRG(s) 553-554 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 733.5 Osteitis condensans (approximate)

Nearby codes

• M85.35 Osteitis condensans, thigh
• M85.351 Osteitis condensans, right thigh
• M85.352 Osteitis condensans, left thigh
• M85.359 Osteitis condensans, unspecified thigh
• M85.36 Osteitis condensans, lower leg
• M85.361 Osteitis condensans, right lower leg (this code)
• M85.362 Osteitis condensans, left lower leg
• M85.369 Osteitis condensans, unspecified lower leg
• M85.37 Osteitis condensans, ankle and foot
• M85.371 Osteitis condensans, right ankle and foot
• M85.372 Osteitis condensans, left ankle and foot