M40
Non-billableKyphosis and lordosis
Kyphosis and lordosis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •arthropathic psoriasisL40.5
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •compartment syndrome (traumatic)A-)T79
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Code First
The underlying condition must be sequenced before this code
- underlying disease
Child Codes (6)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(4)
Frequently Asked Questions
What is the ICD-10 code for kyphosis and lordosis?
The ICD-10-CM code for kyphosis and lordosis is M40. The full clinical description is "Kyphosis and lordosis". M40 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code M40 mean?
ICD-10-CM code M40 represents “Kyphosis and lordosis”. It is classified under Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue and is a non-billable header code. Use a more specific child code for billing purposes.
Is M40 a billable code?
No, M40 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 6 child codes under M40.
What chapter is M40 in?
M40 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M40?
M40 has Excludes1 notes indicating codes that cannot be used together with it, including: congenital kyphosis and lordosis (Q76.4); kyphoscoliosis (M41.-); postprocedural kyphosis and lordosis (M96.-).
What are the subcategories under M40?
M40 has 6 child codes, including: M40.0 (Postural kyphosis), M40.1 (Other secondary kyphosis), M40.2 (Other and unspecified kyphosis), M40.3 (Flatback syndrome), and 2 more.
What are the UMLS CUIs for M40?
M40 is linked to 1 UMLS Concept Unique Identifier: C0494955. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M40 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like kyphosis and lordosis affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of M40?
M40 maps to the ICD-11 code: FA70.Z (Spinal deformities, unspecified).
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.