2026 ICD-10-CM Diagnosis Code F72Severe intellectual disabilities

ICD-10-CM Codes›F01–F99›F70-F79›F72

ICD-10-CM F72
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F72 is a billable ICD-10-CM diagnosis code for severe intellectual disabilities. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 884. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 2 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neurodevelopmental disorders.

F72 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 146 for payment year 2026.

Code Identity

ICD-10-CM Code
F72
Billable Status
Yes — Valid for Submission
Code Describes
Severe intellectual disabilities
Short Description
Severe intellectual disabilities
Same as the full description in the CMS dataset.
Chapter
F70-F79
Intellectual disabilities

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF70-F79Intellectual disabilities
CategoryF72Severe intellectual disabilities
This CodeF72Severe intellectual disabilities

Medicare Risk Adjustment (HCC)Billing

F72 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.

CMS-HCC V28 (Medicare Advantage Payment Model)
Not mapped
no payment category in the model that pays 100% of MA risk scores
Prior Model (CMS-HCC V24)
Not mapped under V24
this diagnosis newly risk-adjusts under the V28 model
Part D (RxHCC)
RxHCC 146 — Profound or Severe Intellectual Disability/Developmental Disorder
also risk-adjusts in the Part D prescription drug model (V08)

Source: CMS Payment Year 2026 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Congenital insensitivity to pain with severe intellectual disability
  • Congenital retrognathism
  • Craniosynostosis, microretrognathia, severe intellectual disability syndrome
  • Diplegia
  • Recession of bone
  • Severe intellectual disability
  • Severe intellectual disability and progressive spastic paraplegia
  • Severe intellectual disability, poor language, strabismus, grimacing face, long fingers syndrome
  • Severe intellectual disability, progressive postnatal microcephaly, midline stereotypic hand movements syndrome
  • Severe intellectual disability, progressive spastic diplegia syndrome
  • Severe intellectual disability, short stature, behavioral abnormalities, facial dysmorphism syndrome
  • Severe motor and intellectual disabilities, sensorineural deafness, dystonia syndrome
  • Spastic diplegia
  • Spastic paralysis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • IQ 20-25 to 35-40
  • Severe mental subnormality

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MBD014
Neurodevelopmental disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Brachial Amyotrophic Diplegia|BAD|FAS|Flail Arm Syndrome|MIBS|Man-in-barrel Syndrome

    a neurodegenerative condition characterized by asymmetric weakness in the upper extremities resulting from segmental lower motor neuron dysfunction.

  • Diplegia

    paralysis affecting corresponding parts on both sides of the body.

  • Diplegia of Upper Limbs|Diplegia of upper limbs

    evidence of diplegia of the upper limbs.

  • Neurodevelopmental Disorder with Spastic Diplegia and Visual Defects|MRD19|Mental Retardation, Autosomal Dominant 19|NEDSDV

    an autosomal dominant condition caused by mutation(s) in the ctnnb1 gene, encoding catenin beta-1. it is characterized by severe intellectual disability, progressive spastic diplegia, visual impairment, and dysmorphic craniofacial features.

  • Quadriplegia|Bilateral Diplegia|Bilateral Diplegia|Quadriplegia, unspecified|Tetraplegia

    paralysis of all four limbs.

  • Spastic Diplegia|Little's Disease|Spastic diplegic cerebral palsy

    a type of cerebral palsy characterized by spasticity and hypertonia of the lower extremities bilaterally, particularly the legs, hips, and pelvis; this is the most common (70%) form of cerebral palsy.

Patient EducationClinical

Developmental Disabilities

Developmental disabilities are conditions that are usually present at birth. They can affect a child's growth and development. These conditions can cause physical, learning, language, or behavior issues. They can include:

The full article covers:

  • What are developmental disabilities?
  • What causes developmental disabilities?
  • How are developmental disabilities diagnosed?
  • What are the treatments for developmental disabilities?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert F72 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
318.1 Sev intellect disability
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About F72Overview

What is the ICD-10 code for severe intellectual disabilities?

The ICD-10-CM code for severe intellectual disabilities is F72. It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is F72 (Severe intellectual disabilities) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report severe intellectual disabilities on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does F72 group to?

When severe intellectual disabilities is the principal diagnosis on an inpatient stay, it groups to MS-DRG 884 (organic Disturbances and Intellectual Disability), which carries a relative weight of 1.6089. Higher weights mean higher Medicare reimbursement.

Is F72 a CC or MCC?

CMS lists F72 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 2 closely related codes in its exclusion list.

What is the ICD-9 equivalent of F72?

Under the General Equivalence Mappings, severe intellectual disabilities converts to ICD-9-CM 318.1 (sev intellect disability). The mapping is a direct match.

Does F72 risk-adjust for Medicare Advantage payment?

Not for Medicare Advantage: F72 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 146 (Profound or Severe Intellectual Disability/Developmental Disorder).