2020 ICD-10-CM Diagnosis Code M40.35

Flatback syndrome, thoracolumbar region

    2016 2017 2018 2019 2020 Billable/Specific Code
  • M40.35 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM M40.35 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M40.35 - other international versions of ICD-10 M40.35 may differ.
The following code(s) above M40.35 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to M40.35:
  • M00-M99
    2020 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    Note
    • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
    Type 2 Excludes
    • arthropathic psoriasis (L40.5-)
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • compartment syndrome (traumatic) (T79.A-)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the musculoskeletal system and connective tissue
  • M40
    ICD-10-CM Diagnosis Code M40

    Kyphosis and lordosis

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • congenital kyphosis and lordosis (Q76.4)
    • kyphoscoliosis (M41.-)
    • postprocedural kyphosis and lordosis (M96.-)
    Kyphosis and lordosis
Approximate Synonyms
  • Flatback syndrome of thoracolumbar region
  • Flatback syndrome of thoracolumbar spine
ICD-10-CM M40.35 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 456 Spinal fusion except cervical with spinal curvature or malignancy or infection or extensive fusions with mcc
  • 457 Spinal fusion except cervical with spinal curvature or malignancy or infection or extensive fusions with cc
  • 458 Spinal fusion except cervical with spinal curvature or malignancy or infection or extensive fusions without cc/mcc
  • 551 Medical back problems with mcc
  • 552 Medical back problems without mcc

Convert M40.35 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to M40.35:
  • Flatback syndrome M40.30
    ICD-10-CM Diagnosis Code M40.30

    Flatback syndrome, site unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • thoracolumbar region M40.35

ICD-10-CM Codes Adjacent To M40.35
M40.205 …… thoracolumbar region
M40.209 …… site unspecified
M40.29 Other kyphosis
M40.292 …… cervical region
M40.293 …… cervicothoracic region
M40.294 …… thoracic region
M40.295 …… thoracolumbar region
M40.299 …… site unspecified
M40.3 Flatback syndrome
M40.30 …… site unspecified
M40.35 …… thoracolumbar region
M40.36 …… lumbar region
M40.37 …… lumbosacral region
M40.4 Postural lordosis
M40.40 …… site unspecified
M40.45 …… thoracolumbar region
M40.46 …… lumbar region
M40.47 …… lumbosacral region
M40.5 Lordosis, unspecified
M40.50 …… site unspecified
M40.55 …… thoracolumbar region

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.