G12 – Spinal muscular atrophy and related syndromes
ICD-10-CM 2027 diagnosis code · Systemic atrophies primarily affecting the central nervous system
ICD-10-CM code
G12
- Code
G12(claims format:G12)- Description
- Spinal muscular atrophy and related syndromes
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 6. Diseases of the nervous system (G00-G99)
- Block
- G10-G14 Systemic atrophies primarily affecting the central nervous system
Billable codes under G12
G12 is a header code and cannot be used on claims. Choose the most specific code:
- G12.0 – Infantile spinal muscular atrophy, type I [Werdnig-Hoffman]Billable
- G12.1 – Other inherited spinal muscular atrophyBillable
- G12.2 – Motor neuron diseaseHeader (more codes below)
- G12.8 – Other spinal muscular atrophies and related syndromesBillable
- G12.9 – Spinal muscular atrophy, unspecifiedBillable
Frequently asked questions
What is ICD-10 code G12?
G12 is the ICD-10-CM code for spinal muscular atrophy and related syndromes, in the block G10-G14 (Systemic atrophies primarily affecting the central nervous system).
Is G12 a billable code?
No. G12 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.