Alphabetic Index · main term
Flatback syndrome
At the main termM40.30
Flatback syndrome is a main term in the FY2027 ICD-10-CM Alphabetic Index (Index to Diseases and Injuries). The Index lists M40.30 for the term on its own. It has 3 subterms and 4 code entries. First-level subterms include lumbar region, lumbosacral region, thoracolumbar region. Confirm any code you find here in the Tabular List before you report it.