M40.0Postural kyphosis

M40.0 is the ICD-10-CM diagnosis code for postural kyphosis. It belongs to category M40 (kyphosis and lordosis), block M40-M43 (deforming dorsopathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within M40 (kyphosis and lordosis), M40.0 is specifically for postural kyphosis. Related codes cover other secondary kyphosis (M40.1), other and unspecified kyphosis (M40.2), Flatback syndrome (M40.3), postural lordosis (M40.4) and lordosis, unspecified (M40.5).

To report this condition, pick the subcode that matches the documentation: M40.00 (site unspecified), M40.03 (cervicothoracic region), M40.04 (thoracic region) and M40.05 (thoracolumbar region).

Don't report M40.0 together with the conditions in its Excludes1 note: osteochondrosis of spine (M42.-).

Code first: underlying disease.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.