F91.9

ICD-10Billable

Conduct disorder, unspecified

Official ICD-10-CM descriptor (FY2026)

Conduct disorder, unspecified

F91.9 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Behavioral disorder NOS
  • Conduct disorder NOS
  • Disruptive behavior disorder NOS
  • Disruptive disorder NOS

Related codes in F91

Where this code sits

Parent code
F91

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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