ICD-10-CM 2027
ICD-10 code for spine osteochondrosis
From the official ICD-10-CM alphabetic index entry “Osteochondrosis › spine”. Page updated September 29, 2026.
About coding spine osteochondrosis
The ICD-10-CM code for spine osteochondrosis is M42.9 (Spinal osteochondrosis, unspecified). The official index lists 10 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M42.9.
Within M42, choose M42.9 (unspecified) only when documentation doesn't support a more specific option: juvenile osteochondrosis of spine (M42.0) and adult osteochondrosis of spine (M42.1).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 553 (Bone Diseases and Arthropathies with MCC, relative weight 1.2494) and DRG 554 (Bone Diseases and Arthropathies without MCC, relative weight 0.8331), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific spine osteochondrosis codes (official index)
- adult M42.10 — Adult osteochondrosis of spine, site unspecified
- cervical region M42.12 — Adult osteochondrosis of spine, cervical region
- cervicothoracic region M42.13 — Adult osteochondrosis of spine, cervicothoracic region
- lumbar region M42.16 — Adult osteochondrosis of spine, lumbar region
- lumbosacral region M42.17 — Adult osteochondrosis of spine, lumbosacral region
- multiple sites M42.19 — Adult osteochondrosis of spine, multiple sites in spine
- occipito-atlanto-axial region M42.11 — Adult osteochondrosis of spine, occipito-atlanto-axial region
- sacrococcygeal region M42.18 — Adult osteochondrosis of spine, sacral and sacrococcygeal region
- thoracic region M42.14 — Adult osteochondrosis of spine, thoracic region
- thoracolumbar region M42.15 — Adult osteochondrosis of spine, thoracolumbar region
- juvenile
Common questions about spine osteochondrosis ICD-10 codes
What is the ICD-10 code for spine osteochondrosis?
- M42.9 — Spinal osteochondrosis, unspecified. More specific codes apply when the documentation supports them: M42.10, M42.12, M42.13, M42.16 and others below.
What is the ICD-10 code for adult spine osteochondrosis?
- M42.10 — Adult osteochondrosis of spine, site unspecified.
Is M42.9 billable?
- Yes. M42.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M42.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M42.9 as a principal diagnosis.
Is M42.9 a CC or MCC?
- No. M42.9 is neither a CC nor an MCC under MS-DRG v44.0.