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F90.9 · Billable

2026 ICD-10-CM Diagnosis Code F90.9

Attention-deficit hyperactivity disorder, unspecified type

About F90.9

Code

F90.9

Description

Attention-deficit hyperactivity disorder, unspecified type

Billable

Yes — billable on its own

Parent code

F90 (Attention-deficit hyperactivity disorders)

Category

F90-F98 — Behavioral and emotional disorders with onset usually occurring in childhood and adolescence

Set

ICD-10-CM 2026

Clinical context

Inherited from F90 (Attention-deficit hyperactivity disorders)

F90 covers ADHD subtypes. F90.0 (predominantly inattentive), F90.1 (predominantly hyperactive-impulsive), F90.2 (combined), F90.8 (other), F90.9 (unspecified). Specificity matters for both treatment planning and medication management.

Code details

Code attributes

  • Non-billable/Non-specific code

Coding rules

  • Specify presentation — Inattentive (F90.0), hyperactive-impulsive (F90.1), or combined (F90.2) — match the DSM-5-TR criteria documented in your evaluation.
  • Document onset — Symptoms must be present before age 12 and in two or more settings (e.g., home and school).
  • Avoid F90.9 if possible — Unspecified is a placeholder. With a structured evaluation (e.g., Vanderbilt, Conners), use a specific subtype.

Sources

  • Centers for Medicare & Medicaid Services — 2026 ICD-10-CM
  • AAPC — ICD-10-CM Code Lookup
  • CDC — ICD-10-CM Official Guidelines for Coding and Reporting

This reference is provided for billing and documentation guidance only. It is not medical advice. For clinical decision-making, consult the current CMS ICD-10-CM Official Guidelines for Coding and Reporting, and verify code applicability against the patient's documented clinical findings.

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