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ICD-10-CM codes for Attention-deficit hyperactivity disorder (ADHD)

The ICD-10-CM Index to Diseases lists attention-deficit hyperactivity disorder (ADHD) under "attention-deficit hyperactivity(adolescent) (adult) (child)". Without more detail in the record it is coded F90.9, attention-deficit hyperactivity disorder, unspecified type, in tabular category F90 (Attention-deficit hyperactivity disorders). The tabular list also files Attention-deficit hyperactivity disorder of childhood or adolescence NOS; Attention-deficit hyperactivity disorder NOS under F90.9. More specific documentation changes the code, for example combined, presentation: F90.2; combined, type: F90.2; hyperactive, impulsive presentation: F90.1.

Compiled from CMS files by the QuickIntell RCM Editorial Team · Data effective · Method: reference methodology · Report a data correction

Data currency: ICD-10-CM code descriptions: FY2027 (effective October 1, 2026). Next CMS release: FY2028 code files, effective October 1, 2027.

Default code: F90.9 Attention-deficit hyperactivity disorder, unspecified type

Index to Diseases entry: attention-deficit hyperactivity(adolescent) (adult) (child)

Each row is a subterm under the entry. Indented rows refine the row above; “see” sends you to another entry. Look the code up in the tabular list before reporting it: the tabular notes can require a more specific or an additional code.

ICD-10-CM index subterms under "attention-deficit hyperactivity(adolescent) (adult) (child)"
DocumentationCodeCode description or cross-reference
combined—
presentationF90.2Attention-deficit hyperactivity disorder, combined type
typeF90.2Attention-deficit hyperactivity disorder, combined type
hyperactive—
impulsive presentationF90.1Attention-deficit hyperactivity disorder, predominantly hyperactive type
typeF90.1Attention-deficit hyperactivity disorder, predominantly hyperactive type
inattentive—
presentationF90.0Attention-deficit hyperactivity disorder, predominantly inattentive type
typeF90.0Attention-deficit hyperactivity disorder, predominantly inattentive type
specified type NECF90.8Attention-deficit hyperactivity disorder, other type

Tabular list notes for F90.9

Inclusion terms
  • Attention-deficit hyperactivity disorder of childhood or adolescence NOS
  • Attention-deficit hyperactivity disorder NOS

How to read an Index to Diseases entry

  • Words in parentheses after a term are nonessential modifiers: they may or may not appear in the record, and they do not change the code.
  • Indented subterms are essential modifiers. Each one describes a different site, type or cause, and when the record supports it, the subterm's code replaces the default code.
  • “With” and “in” link two conditions. The Official Guidelines presume a causal relationship between conditions linked by “with” in the index unless the provider documents that they are unrelated.
  • “See” sends you to another entry that holds the code; “see also” points to another entry that may be useful.
  • A code that ends in a dash, such as I50.-, is incomplete: the tabular list gives the characters it still needs.
  • Never report a code from the index alone. Find it in the tabular list and apply its includes, excludes, code first, use additional code and 7th-character instructions before you report it.

Once the code is settled, check what it does for payment: the HCC lookup for risk adjustment, the CC/MCC exclusion check for inpatient severity, and the LCD code lookup for local coverage of the service it supports. The guide to ICD-10 diagnosis codes explains the code structure.

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Frequently asked questions

What is the ICD-10 code for attention-deficit hyperactivity disorder (ADHD)?

F90.9 (Attention-deficit hyperactivity disorder, unspecified type) is the code the index assigns to "attention-deficit hyperactivity(adolescent) (adult) (child)" with no further detail. Confirm it in the tabular list before reporting it, because the tabular notes can require a different or additional code.

Which documentation changes the code for attention-deficit hyperactivity disorder (ADHD)?

The index lists 7 subterms with their own codes, including combined presentation (F90.2); combined type (F90.2); hyperactive impulsive presentation (F90.1); hyperactive type (F90.1); inattentive presentation (F90.0).

Sources

Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.

Disclaimer

The entry, subterms and codes are reproduced from the FY2027 ICD-10-CM index; code descriptions are from the FY2027 code files. Code from the medical record using both the index and the tabular list, under the ICD-10-CM Official Guidelines. Not legal, clinical or billing advice.

Found a figure that does not match the CMS file? Report a data correction with the CMS file and the value you expected; the request reaches the editorial team through the contact form.