M85.139 Skeletal fluorosis, unspecified forearm

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) 564-566 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 733.99 Other disorders of bone and cartilage (approximate)

Nearby codes

• M85.122 Skeletal fluorosis, left upper arm
• M85.129 Skeletal fluorosis, unspecified upper arm
• M85.13 Skeletal fluorosis, forearm
• M85.131 Skeletal fluorosis, right forearm
• M85.132 Skeletal fluorosis, left forearm
• M85.139 Skeletal fluorosis, unspecified forearm (this code)
• M85.14 Skeletal fluorosis, hand
• M85.141 Skeletal fluorosis, right hand
• M85.142 Skeletal fluorosis, left hand
• M85.149 Skeletal fluorosis, unspecified hand
• M85.15 Skeletal fluorosis, thigh