M40.37 – Flatback syndrome, lumbosacral region
ICD-10-CM 2027 diagnosis code · Deforming dorsopathies
ICD-10-CM code
M40.37
- Code
M40.37(claims format:M4037)- Description
- Flatback syndrome, lumbosacral region
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M40-M43 Deforming dorsopathies
- Parent codes
- M40 › M40.3
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
M40 – Kyphosis and lordosis
Excludes1 (not coded here):
Code first:
- underlying disease
Index terms for M40.37
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in M40.3
Frequently asked questions
What is ICD-10 code M40.37?
M40.37 is the ICD-10-CM code for flatback syndrome, lumbosacral region, in the block M40-M43 (Deforming dorsopathies).
Is M40.37 a billable code?
Yes. M40.37 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does M40.37 belong to?
It belongs to category M40 – Kyphosis and lordosis.
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.