ICD-10-CM Code M40

Kyphosis and lordosis

Version 2020 Non-Billable Code

Not Valid for Submission

M40 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of kyphosis and lordosis. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:M40
Short Description:Kyphosis and lordosis
Long Description:Kyphosis and lordosis

Consider the following ICD-10 codes with a higher level of specificity:

  • M40.0 - Postural kyphosis
  • M40.00 - Postural kyphosis, site unspecified
  • M40.03 - Postural kyphosis, cervicothoracic region
  • M40.04 - Postural kyphosis, thoracic region
  • M40.05 - Postural kyphosis, thoracolumbar region
  • M40.1 - Other secondary kyphosis
  • M40.10 - Other secondary kyphosis, site unspecified
  • M40.12 - Other secondary kyphosis, cervical region
  • M40.13 - Other secondary kyphosis, cervicothoracic region
  • M40.14 - Other secondary kyphosis, thoracic region
  • M40.15 - Other secondary kyphosis, thoracolumbar region
  • M40.2 - Other and unspecified kyphosis
  • M40.20 - Unspecified kyphosis
  • M40.202 - Unspecified kyphosis, cervical region
  • M40.203 - Unspecified kyphosis, cervicothoracic region
  • M40.204 - Unspecified kyphosis, thoracic region
  • M40.205 - Unspecified kyphosis, thoracolumbar region
  • M40.209 - Unspecified kyphosis, site unspecified
  • M40.29 - Other kyphosis
  • M40.292 - Other kyphosis, cervical region
  • M40.293 - Other kyphosis, cervicothoracic region
  • M40.294 - Other kyphosis, thoracic region
  • M40.295 - Other kyphosis, thoracolumbar region
  • M40.299 - Other kyphosis, site unspecified
  • M40.3 - Flatback syndrome
  • M40.30 - Flatback syndrome, site unspecified
  • M40.35 - Flatback syndrome, thoracolumbar region
  • M40.36 - Flatback syndrome, lumbar region
  • M40.37 - Flatback syndrome, lumbosacral region
  • M40.4 - Postural lordosis
  • M40.40 - Postural lordosis, site unspecified
  • M40.45 - Postural lordosis, thoracolumbar region
  • M40.46 - Postural lordosis, lumbar region
  • M40.47 - Postural lordosis, lumbosacral region
  • M40.5 - Lordosis, unspecified
  • M40.50 - Lordosis, unspecified, site unspecified
  • M40.55 - Lordosis, unspecified, thoracolumbar region
  • M40.56 - Lordosis, unspecified, lumbar region
  • M40.57 - Lordosis, unspecified, lumbosacral region

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code M40:

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • congenital kyphosis and lordosis Q76.4
  • kyphoscoliosis M41
  • postprocedural kyphosis and lordosis M96

Code Classification

  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Deforming dorsopathies (M40-M43)
      • Kyphosis and lordosis (M40)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Spine Injuries and Disorders

Your backbone, or spine, is made up of 26 bone discs called vertebrae. The vertebrae protect your spinal cord and allow you to stand and bend. A number of problems can change the structure of the spine or damage the vertebrae and surrounding tissue. They include

  • Infections
  • Injuries
  • Tumors
  • Conditions, such as ankylosing spondylitis and scoliosis
  • Bone changes that come with age, such as spinal stenosis and herniated disks

Spinal diseases often cause pain when bone changes put pressure on the spinal cord or nerves. They can also limit movement. Treatments differ by disease, but sometimes they include back braces and surgery.


[Learn More]