2027 ICD-10-CM Diagnosis Code F84.3Other childhood disintegrative disorder
ICD-10-CM Codes›F01–F99›F80-F89›F84
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Chronic Condition
F84.3 is a billable ICD-10-CM diagnosis code for other childhood disintegrative disorder. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) 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 294 closely related codes. The code is restricted by the Medicare Code Editor to pediatric patients (age 0 through 17). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neurodevelopmental disorders.
F84.3 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 133 for payment year 2027.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for F84.3.
Medicare Risk Adjustment (HCC)Billing
F84.3 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.
Source: CMS Payment Year 2027 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.
- Active disintegrative psychoses
- Autistic disorder of childhood onset
- Childhood disintegrative disorder
- Dementia
- Dementia in remission
- Developmental regression
- Mild dementia
- Moderate dementia
- Mother-daughter symbiotic syndrome
- Pervasive developmental disorder of residual state
- Residual disintegrative psychoses
- Subcortical dementia
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to F84.3: its own notes plus those printed at F84 and Chapter 5. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- disorders of psychological development
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Dementia infantilis
- Disintegrative psychosis
- Heller's syndrome
- Symbiotic psychosis
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to identify any associated neurological condition.
Code Also
A second code may be needed to fully describe the condition; the note gives no sequencing direction.
- any associated medical condition and intellectual disabilities
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name F84.3, its category, or a range that includes it.
Excludes1 2
These codes carry an Excludes1 note naming F84.3: they are not reported together with it, unless the two conditions are unrelated.
Excludes2 5
These codes carry an Excludes2 note naming F84.3: its condition is not part of those codes, and both may be reported when the patient has both.
- F80.1 Expressive language disorderpervasive developmental disorders (F84.-) names F84.-, which includes this code
- F80.2 Mixed receptive-expressive language disorderpervasive developmental disorders (F84.-) names F84.-, which includes this code
- F90 Attention-deficit hyperactivity disorderspervasive developmental disorders (F84.-) names F84.-, which includes this code
- F91 Conduct disorderspervasive developmental disorders (F84.-) names F84.-, which includes this code
- F94.0 Selective mutismpervasive developmental disorders (F84.-) names F84.-, which includes this code
Code First 1
These codes say to code first a condition named in the note, and F84.3 is one of the conditions named.
Use Additional Code 1
These codes say to use an additional code from the note, and F84.3 is one of the codes named.
Code Also 3
These codes say F84.3 may also be needed to fully describe the condition. The note gives no sequencing direction.
- G93.45 Developmental and epileptic encephalopathypervasive developmental disorders (F84.-) names F84.-, which includes this code
- QA0 Neurodevelopmental disorders related to specific genetic pathogenic variantspervasive developmental disorders (F84.-) names F84.-, which includes this code
- Z15.1 Genetic susceptibility to epilepsy and neurodevelopmental disorderspervasive developmental disorders (F84.-) names F84.-, which includes this code
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) F03.90
infantile, infantilis F84.3
Disorder (of) See Also: Disease;
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Autism Spectrum Disorder
a spectrum of developmental disorders that includes autism, asperger syndrome, and rett syndrome. signs and symptoms include poor communication skills, defective social interactions, and repetitive behaviors.
Patient EducationClinical
Child Mental Health
It's important to recognize and treat mental illnesses in children early on. Once mental illness develops, it becomes a regular part of your child's behavior. This makes it more difficult to treat.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert F84.3 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About F84.3Overview
What is the ICD-10 code for other childhood disintegrative disorder?
The ICD-10-CM code for other childhood disintegrative disorder is F84.3 (sometimes written as F843). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is F84.3 (Pervasive developmental disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other childhood disintegrative disorder on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does F84.3 group to?
When other childhood disintegrative disorder 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 1.5998. Higher weights mean higher Medicare reimbursement.
Is F84.3 a CC or MCC?
CMS lists F84.3 as a CC (complication or comorbidity) for FY 2027. 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 294 closely related codes in its exclusion list.
Who can F84.3 be reported for?
The Medicare Code Editor checks other childhood disintegrative disorder against patient demographics: this code is intended for pediatric patients (age 0 through 17). Claims outside these limits are flagged as inconsistent.
Does F84.3 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage: F84.3 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 133 (Anxiety and Other Psychiatric Disorders).
