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ICD-10-CM · F90.9GeneralSystemic

Attention Deficit Disorder

Find comprehensive information on Attention Deficit Disorder (ADD), also known as ADHD predominantly inattentive type. This resource provides guidance on clinical documentation, medical coding, and healthcare best practices for diagnosing and managing ADD/ADHD inattentive type. Learn about symptoms, diagnostic criteria, and treatment options for ADD. Improve your understanding of ADHD predominantly inattentive presentation and ensure accurate documentation for optimal patient care.

Also known as
ADDADHD predominantly inattentive type
Definition

Neurodevelopmental disorder marked by inattention, difficulty focusing, and disorganization.

Clinical signs

Poor concentration, forgetfulness, distractibility, difficulty following instructions, and impulsivity.

Common settings

Primary care, psychiatry, psychology, education, and family therapy settings.

Related Codes

ICD-10 Code Families

Complete code families applicable to F90.9

F90
Attention-deficit hyperactivity disorders
F98
Other behavioral and emotional disorders
F99
Unspecified mental disorder
Code Comparison

When to use each related code

DescriptionWhen to use
Difficulty focusing, inattention, impulsivity.Use for inattention, distractibility, poor organization WITHOUT hyperactivity. Consider ADHD if hyperactivity present.
Inattention, hyperactivity, and impulsivity.Use when inattention, impulsivity AND hyperactivity are present. Most common ADHD presentation.
Impulsive, hyperactive, restless, inattentive.Primarily hyperactive-impulsive presentation. Inattention may or may not be significant.
Documentation

Best-practice checklist

  • Document inattentive symptoms impacting daily life.
  • Specify symptom duration and onset (DSM-5 criteria).
  • Rule out other medical/psychological causes of symptoms.
  • Assess impact on academic/occupational functioning.
  • Record ADHD rating scales and assessment results.
Coding & Audit Risks

Common pitfalls to avoid

Unspecified ADHD Coding

Using unspecified ADHD codes (e.g., F90.9) when a more specific code for predominantly inattentive type (F90.0) is clinically documented, impacting reimbursement and data accuracy.

ADD vs. ADHD Coding

Incorrectly coding ADD (obsolete term) instead of ADHD, leading to coding errors and potential claim denials. Use current ADHD classifications.

Comorbidity Documentation

Insufficient documentation of co-existing conditions (e.g., anxiety, learning disorders) commonly associated with ADHD, affecting accurate risk adjustment and quality reporting.

Mitigation

Best-practice tips

  • 01ICD-10 F90.0, minimize distractions, structured routines.
  • 02CPT 96101, behavioral therapy, improve focus, track progress.
  • 03Document symptom frequency/severity for ADHD diagnosis (DSM-5).
  • 04Medication management, parent/teacher training, clear expectations.
  • 05Compliance: HIPAA, FERPA; consistent documentation for reimbursement.
Clinical Decision Support

Step-by-step checklist

  1. 1

    Inattention symptoms present ≥6 months (ICD-10 F90.0)

  2. 2

    Symptom onset before age 12 (DSM-5 criteria)

  3. 3

    Impairment in ≥2 settings (school, home, work)

  4. 4

    Rule out other causes (anxiety, depression, learning disorders)

  5. 5

    Document symptom severity and impact on functioning

Documentation Template

Ready-to-paste narrative

Patient presents with symptoms consistent with Attention Deficit Disorder (ADD), also known as ADHD predominantly inattentive type.  Clinical presentation includes difficulty sustaining attention in tasks or play activities, frequent forgetfulness in daily activities, and difficulty organizing tasks and activities.  The patient reports difficulty following through on instructions and often fails to finish schoolwork, chores, or duties in the workplace.  They frequently lose things necessary for tasks or activities, such as school supplies, pencils, books, tools, or wallets.  The patient is easily distracted by extraneous stimuli and often appears not to listen when spoken to directly.  These symptoms have been present for over six months and are observed in multiple settings (e.g., home, school, work).  Symptoms significantly impair the patient's academic, occupational, or social functioning.  Differential diagnosis includes anxiety disorders, depression, learning disabilities, and other medical conditions that may mimic inattention.  Assessment includes a thorough clinical interview, behavioral rating scales (e.g., Conners, Vanderbilt), and review of academic and occupational performance.  Treatment plan may include behavioral therapy, parent training, and consideration for stimulant medication (e.g., methylphenidate, amphetamine) based on symptom severity and functional impairment.  ICD-10 code F90.0 will be used for medical billing and coding purposes.  Follow-up appointment scheduled to monitor treatment response and adjust interventions as needed.  Prognosis depends on individual response to treatment and adherence to the recommended plan.
FAQs

Common questions and answers

How can I differentiate between inattentive ADHD (formerly ADD) and other conditions presenting with similar symptoms in adults, such as anxiety, depression, or learning disabilities?+

Differentiating Inattentive ADHD (previously known as ADD) from conditions like anxiety, depression, or learning disabilities in adults requires a comprehensive assessment encompassing several key areas. First, explore the patient's history for childhood onset of symptoms, a hallmark of ADHD. While symptoms might not have been formally recognized in childhood, retrospective inquiry can be revealing. Secondly, consider the pervasiveness of inattention. In ADHD, inattention manifests across multiple settings (work, home, social situations), whereas inattention related to anxiety or depression might be more context-specific. Third, assess the specific nature of the inattention. ADHD-related inattention involves difficulties with sustained focus, organization, and task completion, while inattention in anxiety might stem from excessive worry and in depression from low motivation or cognitive slowing. Formal neuropsychological testing can help disentangle cognitive profiles associated with learning disabilities from those seen in ADHD. Consider implementing standardized rating scales like the Adult ADHD Self-Report Scale (ASRS-v1.1) alongside a thorough clinical interview to gather comprehensive information and inform differential diagnosis. Explore how incorporating validated assessment tools can strengthen diagnostic accuracy and inform treatment planning.

What are the evidence-based best practices for managing inattentive ADHD in adult patients, particularly regarding medication choices, therapy approaches, and lifestyle modifications?+

Evidence-based best practices for managing inattentive ADHD in adults involve a multimodal approach encompassing medication, therapy, and lifestyle adjustments. Stimulant medications, such as methylphenidate and amphetamines, remain first-line pharmacological treatments, demonstrating efficacy in improving attention, focus, and executive functions. Non-stimulant options, like atomoxetine or guanfacine, are valuable alternatives for patients with contraindications or sensitivities to stimulants. Cognitive Behavioral Therapy (CBT) specifically tailored for ADHD empowers patients to develop coping strategies for managing inattention, disorganization, and emotional regulation. Furthermore, lifestyle modifications, including regular exercise, adequate sleep, and mindfulness practices, can complement other interventions and improve overall well-being. Consider implementing a shared decision-making approach with patients to tailor treatment plans to individual needs and preferences, ensuring adherence and optimizing outcomes. Learn more about the emerging research on the impact of digital therapeutics and telehealth in ADHD management to further enhance accessibility and personalize care.

What are the common comorbidities associated with inattentive ADHD in adults, and how do these comorbid conditions influence the diagnosis and treatment planning process?+

Inattentive ADHD in adults frequently co-occurs with other mental health conditions, including anxiety disorders, depression, mood disorders, learning disabilities, and substance use disorders. These comorbidities can significantly impact both the diagnosis and treatment planning process. For example, overlapping symptoms between anxiety and inattentive ADHD, such as difficulty concentrating and restlessness, can mask the underlying ADHD. Similarly, depression can exacerbate inattention, making it crucial to carefully assess the presence and severity of comorbid conditions. Effective treatment planning requires a comprehensive understanding of how these comorbidities interact. Addressing comorbid anxiety or depression alongside ADHD is often essential for optimal symptom management. Explore how integrated treatment approaches, combining medication management, therapy, and lifestyle interventions, can address both ADHD and co-occurring conditions, leading to improved long-term outcomes for adult patients. Consider collaborating with other specialists, such as psychiatrists, psychologists, or learning specialists, to provide holistic and coordinated care.

Clinical accuracy: This information is provided for documentation and coding guidance and should not replace professional medical judgment.

Coding standard: ICD-10-CM, current FY guidelines.