F90.2 ICD-10-CM Code: Attention-deficit hyperactivity disorder, combined type
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FY 2026 Apr update / Mental, Behavioral and Neurodevelopmental disorders (F01-F99) / Behavioral and emotional disorders with onset usually occurring in childhood and adolescence (F90-F98)
F90.2
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceAttention-deficit hyperactivity disorder, combined type
A neurodevelopmental condition where a person exhibits significant difficulties with attention, focus, hyperactivity, and impulse control simultaneously.
Buddy Insight
ADHD combined type is the most common presentation, meeting full criteria for both inattention and hyperactivity-impulsivity.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
MappedHCC 133
RAF 0.0
Code Trumping
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Code Book Path
Inclusion Terms
Official- Attention-deficit/hyperactivity disorder, combined presentation
Excludes 2
Official- anxiety disorders (F40.-, F41.-)
- mood [affective] disorders (F30-F39)
- pervasive developmental disorders (F84.-)
- schizophrenia (F20.-)
Related Child Codes
Includes
Official- attention deficit disorder with hyperactivity
- attention deficit syndrome with hyperactivity
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for F90.2 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for F90.2 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for F90.2 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for F90.2 in this effective period.
Buddy Documentation Tip
MEAT Support
Audit Caution
Common Mistakes
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is F90.2 an HCC code?
No. F90.2 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
HCC Category Mapping
RAF weights shown are the community, non-dual, aged base weights from the CMS risk adjustment model file. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.
MEAT Criteria for F90.2
For F90.2to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.
- MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
- EEvaluate: test results, medication response, or physical findings reviewed by the provider
- AAssess: explicit mention in the assessment or plan with acknowledgment of status
- TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis
Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed F90.2 during that encounter, not just copy-forwarded from a problem list.
Coder workflow notes
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What This Code Means
F90.2 is the ICD-10-CM diagnosis code for attention-deficit hyperactivity disorder, combined type. A neurodevelopmental condition where a person exhibits significant difficulties with attention, focus, hyperactivity, and impulse control simultaneously. F90.2 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering behavioral and emotional disorders with onset usually occurring in childhood and adolescence (f90-f98).
F90.2 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
F90.2 does not map to any HCC in V28 or V24 models. RxHCC maps to 133 (0.000). No direct RAF score contribution. Most commonly used ADHD code — accurate subtype specification supports medication management decisions. Coders reviewing F90.2 should check whether additional documentation would support a more specific child code in the same hierarchy that does map to a payment HCC, capturing the correct specificity is the highest-impact RAF improvement available within accurate coding.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for F90.2 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This is the most common ADHD presentation; ensure documentation reflects symptoms across all three domains (inattention, hyperactivity, impulsivity)
- •Verify symptoms are present in multiple settings (home, school, work) to support diagnosis
Clinical Significance
ADHD combined type is the most common presentation, meeting full criteria for both inattention and hyperactivity-impulsivity. These patients experience the broadest range of functional impairments across academic, occupational, social, and daily living domains. Combined type is associated with the highest rates of comorbid conditions including oppositional defiant disorder, conduct disorder, anxiety, depression, and substance use disorders.
Documentation Requirements
- ✓Provider documentation specifying ADHD, combined presentation/type
- ✓Evidence meeting threshold criteria for both inattention (six or more symptoms) and hyperactivity-impulsivity (six or more symptoms)
- ✓Symptom duration of at least 6 months with presence in two or more settings
- ✓Documentation of functional impairment in academic, occupational, or social domains
- ✓Assessment for comorbid conditions and current treatment plan
Commonly Confused Codes
- •F90.0: ADHD, predominantly inattentive type; does not meet full hyperactivity-impulsivity criteria
- •F90.1: ADHD, predominantly hyperactive type; does not meet full inattention criteria
- •F90.9: ADHD, unspecified type; use F90.2 when combined type is documented
- •F90.8: ADHD, other type; for atypical presentations not fitting standard subtypes