ICD10Check
CheckerBrowseOpen

M40

⚠ Non-billable (Header)

Kyphosis and lordosis

Diseases of the musculoskeletal system and connective tissue (M00-M99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

Check This Code

📋 Code Instructions

  • • Code first: underlying disease

❌ Excludes1

direct

Cannot be coded with M40

  • • congenital kyphosis and lordosis (Q76.4)
  • • kyphoscoliosis (M41.-)
  • • postprocedural kyphosis and lordosis (M96.-)

Child Codes (6)

M40.0Postural kyphosisM40.1Other secondary kyphosisM40.2Other and unspecified kyphosisM40.3Flatback syndromeM40.4Postural lordosisM40.5Lordosis, unspecified

🧪 Validate Combinations

Add M40 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeM40
BillableNo — Header code
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes13 rule(s)
Excludes20 note(s)
Child codes6

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)