F72 ICD-10-CM Code: Severe intellectual disabilities
F72 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · free HCC coding tools
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FY 2026 Apr update / Mental, Behavioral and Neurodevelopmental disorders (F01-F99) / Intellectual Disabilities (F70-F79)
F72
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceSevere intellectual disabilities
A developmental condition where a person has severe intellectual disability, meaning they have significantly below-average intellectual functioning and require substantial support for daily living activities.
Buddy Insight
Severe intellectual disability represents an IQ range of approximately 20-34 with very limited language and communication abilities.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
MappedHCC 146
Code-level coefficient reference
Code Book Path
Inclusion Terms
Official- IQ 20-25 to 35-40
- Severe mental subnormality
Excludes 2
Official- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)Inherited from F01-F99
Related Codes
No related codes are included in this display for F72. Check the Code Book for the complete code path.
Includes
Official- disorders of psychological developmentInherited from F01-F99
Excludes 1
Official- borderline intellectual functioning, IQ above 70 to 84 (R41.83)Inherited from F70-F79
Code First
Official- any associated physical or developmental disordersInherited from F70-F79
Use Additional
OfficialNo Use Additional Code instructions are included in this display for F72. Check the code and parent instructions in the Code Book.
Code Also
OfficialNo Code Also instructions are included in this display for F72. Check the code and parent instructions in the Code Book.
Buddy Documentation Tip
MEAT Support
Audit Caution
Common Mistakes
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is F72 an HCC code?
F72 has no mapping under the current CMS-HCC V28 community payment model. F72 has a separate mapping under the Part D RxHCC model (HCC 146 (Profound or Severe Intellectual Disability/Developmental Disorder)); the applicable result needs member context.
- Code
- F72
- Description
- Severe intellectual disabilities
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- Yes
- Payment year
- 2026
HCC Category Mapping
These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.
Work F72 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →
MEAT review for F72
For F72, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule.
- 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
Coder workflow notes
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What This Code Means
F72 is the ICD-10-CM diagnosis code for severe intellectual disabilities. A developmental condition where a person has severe intellectual disability, meaning they have significantly below-average intellectual functioning and require substantial support for daily living activities. F72 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering intellectual disabilities (f70-f79).
F72 has no mapping under the current CMS-HCC V28 community payment model. F72 has a separate mapping under the Part D RxHCC model (HCC 146 (Profound or Severe Intellectual Disability/Developmental Disorder)); the applicable result needs member context. Do not assign V28 risk adjustment value from this page; verify the applicable model and payment year before using this code for risk adjustment.
Document IQ scores and adaptive functioning assessments that support severe level classification.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for F72 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Document IQ scores and adaptive functioning assessments that support severe level classification
- •Note the extent of support needed for self-care, communication, and safety
Clinical Significance
Severe intellectual disability represents an IQ range of approximately 20-34 with very limited language and communication abilities. These individuals require extensive daily support for all self-care activities and are unable to live independently. They have high rates of comorbid conditions including epilepsy, motor impairments, and behavioral disorders. Healthcare encounters are complex and require specialized communication approaches.
Documentation Requirements
- ✓Provider documentation of intellectual disability with specification of severity as severe
- ✓Formal cognitive testing (IQ approximately 20-34) or clinical assessment supporting severe severity
- ✓Documentation of extensive adaptive functioning deficits requiring constant supervision
- ✓Assessment of communication modality and capacity for healthcare participation
- ✓Documentation of caregiving arrangements, guardianship status, and multidisciplinary support team
Commonly Confused Codes
- •F71: Moderate intellectual disabilities; moderate ID (IQ 35-49) allows for some independent self-care, unlike severe
- •F73: Profound intellectual disabilities; profound ID (IQ below 20) represents even more limited functioning than severe
- •F79: Unspecified intellectual disabilities; always use the specified severity code when documented
- •G80.x: Cerebral palsy; motor impairments in cerebral palsy are separate from intellectual disability even when co-occurring