M40

Non-billable

Kyphosis and lordosis

M40 is the ICD-10-CM code for Kyphosis and lordosis. It is a non-billable category code — use a more specific child code such as M40.0 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Subcodes
6
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

Excludes1 — not coded here

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

Code first

  • underlying disease

Frequently asked questions

What is ICD-10 code M40?
M40 is the ICD-10-CM code for "Kyphosis and lordosis". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M40 a billable code?
No — M40 is a non-billable header code. Use a more specific child code (such as M40.0) for billing.
What are the subcodes of M40?
M40 has 6 more specific child codes, including M40.0, M40.1, M40.2.
What is excluded from M40?
Excludes1 (not coded here): congenital kyphosis and lordosis (Q76.4); kyphoscoliosis (M41.-); postprocedural kyphosis and lordosis (M96.-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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