2027 ICD-10-CM Diagnosis Code F84.8Other pervasive developmental disorders
ICD-10-CM Codes›F01–F99›F80-F89›F84
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Chronic Condition
F84.8 is a billable ICD-10-CM diagnosis code for other pervasive developmental disorders. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 885. 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. Coders also document this condition as atypical childhood psychoses. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neurodevelopmental disorders.
F84.8 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
Medicare Risk Adjustment (HCC)Billing
F84.8 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.
- Atypical childhood psychoses
- Autistic spectrum disorder with isolated skills
- FOXG1 syndrome
- Pathological demand avoidance
- Psychosis with origin in childhood
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to F84.8: 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.
- Overactive disorder associated with intellectual disabilities and stereotyped movements
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.
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 F84.8, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming F84.8: they are not reported together with it, unless the two conditions are unrelated.
- Z55 Problems related to education and literacy
Excludes2 5
These codes carry an Excludes2 note naming F84.8: 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 F84.8 is one of the conditions named.
Use Additional Code 1
These codes say to use an additional code from the note, and F84.8 is one of the codes named.
Code Also 4
These codes say F84.8 may also be needed to fully describe the condition. The note gives no sequencing direction.
- F78.A1 SYNGAP1-related intellectual disabilityother pervasive developmental disorders (F84.8)
- 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.
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
Autism Spectrum Disorder
Autism spectrum disorder (ASD) is a neurological and developmental disorder that begins early in childhood and lasts throughout a person's life. It affects how a person acts and interacts with others, communicates, and learns. It includes what used to be known as Asperger syndrome and pervasive developmental disorders.
Read the full article at MedlinePlus
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Convert F84.8 to ICD-9-CMHistory
Code HistoryHistory
Questions About F84.8Overview
What is the ICD-10 code for other pervasive developmental disorders?
The ICD-10-CM code for other pervasive developmental disorders is F84.8 (sometimes written as F848). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is F84.8 (Pervasive developmental disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other pervasive developmental disorders on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does F84.8 group to?
When other pervasive developmental disorders is the principal diagnosis on an inpatient stay, it groups to MS-DRG 885 (psychoses), which carries a relative weight of 1.3904. Higher weights mean higher Medicare reimbursement.
Is F84.8 a CC or MCC?
CMS lists F84.8 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.
What is the ICD-9 equivalent of F84.8?
Under the General Equivalence Mappings, other pervasive developmental disorders converts to ICD-9-CM 299.80 (pervasv dev dis-cur NEC) and 299.81 (pervasv dev dis-res NEC). The mapping is approximate, so confirm the match fits the documentation.
Does F84.8 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage: F84.8 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).
