What is ICD-10 code F90.0?

F90.0 is the ICD-10-CM code for Attention-Deficit/Hyperactivity Disorder, Predominantly Inattentive Type, the presentation in which six or more inattention symptoms (e.g., careless mistakes, sustained-attention difficulty, organization problems) have persisted for at least six months without prominent hyperactivity-impulsivity.

What are the diagnostic criteria for F90.0?

DSM-5-TR criteria require at least 6 of 9 inattention symptoms (5 in adults age 17+) persisting for ≥6 months, with several symptoms present before age 12, occurring in two or more settings, causing clinically significant impairment, and not better explained by another disorder. F90.0 specifically requires that hyperactivity-impulsivity criteria are NOT met.

What scale is used to screen for F90.0 in adults?

The Adult ADHD Self-Report Scale (ASRS) Part A is the standard 6-item screener for adult ADHD, with 68.7% sensitivity and 99.5% specificity (Kessler et al., 2007). For retrospective childhood symptoms (required by DSM-5-TR), the Wender Utah Rating Scale (WURS-25) is co-administered.

What is the difference between F90.0, F90.1, and F90.2?

F90.0 is Predominantly Inattentive Type. F90.1 is Predominantly Hyperactive-Impulsive Type. F90.2 is Combined Type (most common in children). Selection depends on which symptom cluster currently predominates over the past six months. Many adults shift from Combined to Inattentive presentation over time as overt hyperactivity decreases.

Is F90.0 the same as ADD?

Functionally yes. 'ADD' (attention-deficit disorder) is the older DSM-III/IV term for what DSM-5-TR and ICD-10-CM now code as F90.0 ADHD Predominantly Inattentive Type. The terminology was unified under ADHD when research showed inattention and hyperactivity-impulsivity exist on a single dimensional spectrum.

Is F90.0 a billable ICD-10-CM code?

Yes, F90.0 is a billable code in the FY2027 ICD-10-CM code set (effective October 1, 2026). It is the standard reimbursed code for ADHD, predominantly inattentive type. Other billable codes in the F90 family include F90.1 (predominantly hyperactive type), F90.2 (combined type), F90.8 (other type), and F90.9 (unspecified type).

What are the symptoms of inattentive ADHD?

ADHD predominantly inattentive type produces persistent inattention symptoms without prominent hyperactivity. Core symptoms include careless mistakes, difficulty sustaining attention on tasks, not seeming to listen when spoken to, failing to follow through on instructions, organization difficulties, avoiding sustained mental effort, losing necessary items, easy distractibility, and forgetfulness in daily activities. At least 6 of 9 symptoms (5 in adults age 17+) must persist for at least six months across two or more settings.

How is ADHD diagnosed?

ADHD is diagnosed by a clinician using DSM-5-TR criteria, which require at least 6 of 9 inattention symptoms (5 in adults), symptom onset before age 12, presence in two or more settings, and clinically significant impairment. Diagnosis typically follows a positive ASRS screen for adults or Vanderbilt or Conners scale for children, structured clinical interview, retrospective developmental history, ruling out medical and psychiatric alternatives, and collateral information from family or teachers.

ADHD arises primarily from genetic factors, with neurodevelopmental and environmental contributors. Heritability estimates from twin studies range from 70% to 80%, among the highest in psychiatry. Neurobiological contributors include altered dopamine and norepinephrine signaling, reduced prefrontal cortex volume, and delayed cortical maturation. Prenatal and early-life contributors include low birth weight, prenatal exposure to alcohol or nicotine, and severe early deprivation.

ADHD is a lifelong neurodevelopmental condition managed effectively with treatment rather than cured. Stimulant medications (methylphenidate, amphetamines) are first-line and produce response rates of 70% to 80%; non-stimulants (atomoxetine, guanfacine, clonidine) are second-line. Behavioural therapy, parent training, school or workplace accommodations, and CBT for adults add meaningful benefit. Many adults experience reduced symptoms over time, though core attention and executive-function differences typically persist.

F90.0ICD-10-CMAttention-Deficit/Hyperactivity Disorder, Predominantly Inattentive Type

Official ICD-10-CM descriptor: Attention-deficit hyperactivity disorder, predominantly inattentive type · Category header, not billable: use a more specific code

Persistent pattern of inattention symptoms, careless mistakes, sustained-attention difficulty, organization problems, distractibility, present for at least six months across two or more settings, without prominent hyperactivity-impulsivity.

Recommended screener

Validated screener
Adult ADHD Self-Report Scale (ASRS)
View scale

DSM-5-TR diagnostic criteria summary

F90.0 requires:

At least 6 of 9 inattention symptoms (5 for adolescents 17+ and adults), persisting ≥6 months at a level inconsistent with developmental level: failing to attend to detail, difficulty sustaining attention, not listening when spoken to directly, not following through on instructions, organization difficulties, avoiding sustained mental effort, losing things, distractibility, forgetfulness.
Hyperactivity-impulsivity criteria NOT met (fewer than 6 hyperactive-impulsive symptoms in past 6 months).
Several symptoms present before age 12, supports the developmental nature of ADHD.
Symptoms in two or more settings (work, home, school, social).
Clear evidence of clinically significant impairment in social, academic, or occupational functioning.
Not better explained by another mental disorder (mood, anxiety, dissociative, personality disorder, substance intoxication/withdrawal).

Source: American Psychiatric Association. (2022). Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR), p. 68–76.

Differential diagnosis

F90.1 / F90.2, Hyperactive-Impulsive or Combined ADHD; differentiated by symptom cluster predominance.
Major Depressive Disorder (F33, F32), concentration difficulty in depression mimics inattention; usually time-limited to depressive episodes.
Generalized Anxiety Disorder (F41.1), worry-driven distractibility; differential rests on whether attention deficits exist outside of anxious states.
Bipolar Disorder (F31.x), manic/hypomanic episodes can mimic hyperactivity; episodic vs persistent course differentiates.
Substance Use Disorders (F10–F19), particularly stimulant use disorder; chronologic relationship between substance use and symptom onset matters.
Sleep disorders (sleep apnea, restless legs), chronic sleep deprivation produces ADHD-like inattention.
Specific Learning Disorder (F81.x), domain-specific academic difficulties without pervasive attentional problems.

Common comorbidities

Adult ADHD has high lifetime comorbidity. Common co-occurring conditions: Major Depressive Disorder (F33, F32), Generalized Anxiety Disorder (F41.1), Substance Use Disorders (F10–F19, especially alcohol and cannabis), Specific Learning Disorder (F81.x), and Oppositional Defiant Disorder (F91.3) in pediatric presentations. Co-administer PHQ-9, GAD-7, and AUDIT alongside ASRS for comprehensive screening.

Sources

American Psychiatric Association. (2022). Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR), F90.0, p. 68–76.
Kessler, R. C., et al. (2007). Validity of the World Health Organization Adult ADHD Self-Report Scale (ASRS) Screener in a representative sample of health plan members. International Journal of Methods in Psychiatric Research, 16(2), 52–65.
Centers for Disease Control and Prevention. ICD-10-CM Official Coding Guidelines.

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Frequently asked questions

What is ICD-10 code F90.0?
F90.0 is the ICD-10-CM code for Attention-Deficit/Hyperactivity Disorder, Predominantly Inattentive Type, the presentation in which six or more inattention symptoms (e.g., careless mistakes, sustained-attention difficulty, organization problems) have persisted for at least six months without prominent hyperactivity-impulsivity.
What are the diagnostic criteria for F90.0?
DSM-5-TR criteria require at least 6 of 9 inattention symptoms (5 in adults age 17+) persisting for ≥6 months, with several symptoms present before age 12, occurring in two or more settings, causing clinically significant impairment, and not better explained by another disorder. F90.0 specifically requires that hyperactivity-impulsivity criteria are NOT met.
What scale is used to screen for F90.0 in adults?
The Adult ADHD Self-Report Scale (ASRS) Part A is the standard 6-item screener for adult ADHD, with 68.7% sensitivity and 99.5% specificity (Kessler et al., 2007). For retrospective childhood symptoms (required by DSM-5-TR), the Wender Utah Rating Scale (WURS-25) is co-administered.
What is the difference between F90.0, F90.1, and F90.2?
F90.0 is Predominantly Inattentive Type. F90.1 is Predominantly Hyperactive-Impulsive Type. F90.2 is Combined Type (most common in children). Selection depends on which symptom cluster currently predominates over the past six months. Many adults shift from Combined to Inattentive presentation over time as overt hyperactivity decreases.
Is F90.0 the same as ADD?
Functionally yes. 'ADD' (attention-deficit disorder) is the older DSM-III/IV term for what DSM-5-TR and ICD-10-CM now code as F90.0 ADHD Predominantly Inattentive Type. The terminology was unified under ADHD when research showed inattention and hyperactivity-impulsivity exist on a single dimensional spectrum.
Is F90.0 a billable ICD-10-CM code?
Yes, F90.0 is a billable code in the FY2027 ICD-10-CM code set (effective October 1, 2026). It is the standard reimbursed code for ADHD, predominantly inattentive type. Other billable codes in the F90 family include F90.1 (predominantly hyperactive type), F90.2 (combined type), F90.8 (other type), and F90.9 (unspecified type).
What are the symptoms of inattentive ADHD?
ADHD predominantly inattentive type produces persistent inattention symptoms without prominent hyperactivity. Core symptoms include careless mistakes, difficulty sustaining attention on tasks, not seeming to listen when spoken to, failing to follow through on instructions, organization difficulties, avoiding sustained mental effort, losing necessary items, easy distractibility, and forgetfulness in daily activities. At least 6 of 9 symptoms (5 in adults age 17+) must persist for at least six months across two or more settings.
How is ADHD diagnosed?
ADHD is diagnosed by a clinician using DSM-5-TR criteria, which require at least 6 of 9 inattention symptoms (5 in adults), symptom onset before age 12, presence in two or more settings, and clinically significant impairment. Diagnosis typically follows a positive ASRS screen for adults or Vanderbilt or Conners scale for children, structured clinical interview, retrospective developmental history, ruling out medical and psychiatric alternatives, and collateral information from family or teachers.
What causes ADHD?
ADHD arises primarily from genetic factors, with neurodevelopmental and environmental contributors. Heritability estimates from twin studies range from 70% to 80%, among the highest in psychiatry. Neurobiological contributors include altered dopamine and norepinephrine signaling, reduced prefrontal cortex volume, and delayed cortical maturation. Prenatal and early-life contributors include low birth weight, prenatal exposure to alcohol or nicotine, and severe early deprivation.
Can ADHD be cured?
ADHD is a lifelong neurodevelopmental condition managed effectively with treatment rather than cured. Stimulant medications (methylphenidate, amphetamines) are first-line and produce response rates of 70% to 80%; non-stimulants (atomoxetine, guanfacine, clonidine) are second-line. Behavioural therapy, parent training, school or workplace accommodations, and CBT for adults add meaningful benefit. Many adults experience reduced symptoms over time, though core attention and executive-function differences typically persist.