M42.16 Adult osteochondrosis of spine, lumbar region

Billable ICD-10-CM code, FY2026.

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 732.8 Other specified forms of osteochondropathy (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Adult diagnoses (age 15 through 124): Age conflict edit. These diagnoses are clinically expected only in patients age 15 through 124.

Code annotations containing back-references to M42.16

Back-references to M42

• Type 1 Excludes: M40.0 Postural kyphosis ("osteochondrosis of spine (M42.-)")
• Type 2 Excludes: M93 Other osteochondropathies ("osteochondrosis of spine (M42.-)")
• Type 2 Excludes: M95 Other acquired deformities of musculoskeletal system and connective tissue ("deforming dorsopathies (M40-M43)")

Diagnosis Index entries for M42.16

• Osteochondrosis › spine › adult › lumbar region

Nearby codes

• M42.11 Adult osteochondrosis of spine, occipito-atlanto-axial region
• M42.12 Adult osteochondrosis of spine, cervical region
• M42.13 Adult osteochondrosis of spine, cervicothoracic region
• M42.14 Adult osteochondrosis of spine, thoracic region
• M42.15 Adult osteochondrosis of spine, thoracolumbar region
• M42.16 Adult osteochondrosis of spine, lumbar region (this code)
• M42.17 Adult osteochondrosis of spine, lumbosacral region
• M42.18 Adult osteochondrosis of spine, sacral and sacrococcygeal region
• M42.19 Adult osteochondrosis of spine, multiple sites in spine
• M42.9 Spinal osteochondrosis, unspecified