DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 5

F70-F79 Intellectual Disabilities (F70-F79)

Block F70-F79 groups 6 categories with 7 billable codes in FY2027.

Where it sits

  1. Chapter 5 Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
  2. F70-F79 Intellectual Disabilities (F70-F79)

Neighbouring blocks

Categories
6
Billable codes
7
CC codes
2
MCC codes
0
HCC V28 codes
0
New FY2027
0

Categories in F70-F79

  • F70

    Mild intellectual disabilities

    Feeble-minded → F70

    • Billable, no subdivisions
  • F71

    Moderate intellectual disabilities

    Imbecile, imbecility (I.Q.35-49) → F71

    • Billable, no subdivisions
  • F72

    Severe intellectual disabilities

    I.Q.20-34 → F72

    • Billable, no subdivisions
    • 1 CC
  • F73

    Profound intellectual disabilities

    Idiot, idiocy (congenital) → F73

    • Billable, no subdivisions
    • 1 CC
  • F78

    Other intellectual disabilities

    Disability, disabilitiesintellectualgenetic related → F78.A9

    • 2 billable codes
  • F79

    Unspecified intellectual disabilities

    Developmenttardy, mental → F79

    • Billable, no subdivisions

Index main terms

  • Disability, disabilities → F70, F71, F72, F73, F78, F79 (31 entries)
  • I.Q. → F70, F71, F72, F73 (4 entries)
  • Defect, defective → F70 (1 entry)
  • Development → F79 (1 entry)
  • Feeble-minded → F70 (1 entry)
  • Idiot, idiocy (congenital) → F73 (1 entry)
  • Imbecile, imbecility (I.Q.35-49) → F71 (1 entry)
  • Moron (I.Q.50-69) → F70 (1 entry)
  • Weak, weakening, weakness (generalized) → F70 (1 entry)

Block instructions

Excludes1

  • borderline intellectual functioning, IQ above 70 to 84 (R41.83) R41.83

Code first

  • any associated physical or developmental disorders

Notes that also apply

Chapter 5 instructions (Includes 1, Excludes2 1): printed on the chapter 5 page.