ICD-10-CM > M00-M99 > M40-M43 > M40 > M40.0 M40.0 Postural kyphosis Non-Billable/Non-Specific Type 1 Excludes osteochondrosis of spine (M42.-) Codes M40.00Postural kyphosis, site unspecifiedM40.03Postural kyphosis, cervicothoracic regionM40.04Postural kyphosis, thoracic regionM40.05Postural kyphosis, thoracolumbar region