ICD-10-CM M40: Kyphosis and lordosis

ICD-10-CM Diagnosis Code (2025)

Official Description for M40

Kyphosis and lordosis

Coding Notes & Guidelines for M40

Excludes1: Not Coded Here
  • congenital kyphosis and lordosis (Q76.4)
  • kyphoscoliosis (M41.-)
  • postprocedural kyphosis and lordosis (M96.-)
Excludes1: Not Coded Here

osteochondrosis of spine (M42.-)

Code First

underlying disease

Inclusion Terms

Acquired lordosis

Child Codes (More Specific Codes for M40):

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

About ICD-10-CM Code M40 (Kyphosis and lordosis)

ICD-10-CM code M40 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM M40 became effective on October 1, 2024.

This page provides detailed information about M40 - Kyphosis and lordosis. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Kyphosis and lordosis.