DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

F01-F99 · FY2027

Chapter 5 Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

Chapter 5 holds 72 categories in 11 blocks, with 872 billable codes in FY2027, 1 of them new this year.

Blocks
11
Categories
72
Billable codes
872
New FY2027
1
Instructions
2

Blocks and categories

Chapter instructions

Includes

  • disorders of psychological development

Excludes2

  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99) R00 R99