All ICD10 Codes
F89Billable, valid for claims from October 1, 2026

Unspecified disorder of psychological development

In Pervasive and specific developmental disorders (F80-F89), chapter 5: Mental, Behavioral and Neurodevelopmental Disorders

  • F89 is an unspecified code: use it only when the record doesn't document anything more specific. If the record has more detail, check the other codes under F80-F89 below.
  • As a secondary diagnosis it is not a CC or MCC, so it doesn't raise the MS-DRG payment.
  • Doesn't count toward a Medicare Advantage risk score (no HCC in V28).
  • AHRQ's Chronic Condition Indicator classes it as not chronic (an acute or short-term condition).
  • 13 US deaths in 2024 had an underlying cause in category F89, per the National Vital Statistics System on CDC WONDER. Death records use WHO ICD-10, so the count is for the whole category.

Also indexed as: Disorder, developmental; Disorder, neurodevelopmental

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Instructional notes

Includes: conditions that are coded here

  • Developmental disorder NOS
  • Neurodevelopmental disorder NOS

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers psychological pain disorders, substance use, abuse, dependence and remission, factitious disorder including Munchausen by proxy, and dementia severity.

Read Section I.C.5 (page 43)

Other codes under F80-F89

Pervasive and specific developmental disorders (F80-F89)

F89 MS-DRG

As the principal diagnosis, F89 groups to MS-DRG 886 (v44.0).

Related conditions

Grouped by AHRQ's Clinical Classifications Software Refined (CCSR), which sorts every diagnosis code into clinically meaningful categories.

F89 is in Neurodevelopmental disorders (MBD014, its default category), with 57 codes. Others in it:

  • F70 Mild intellectual disabilities
  • F71 Moderate intellectual disabilities
  • F72 Severe intellectual disabilities
  • F73 Profound intellectual disabilities
  • F78.A1 SYNGAP1-related intellectual disability
  • F78.A9 Other genetic related intellectual disability
  • F79 Unspecified intellectual disabilities
  • F80.0 Phonological disorder

Medicare coverage articles listing F89

These 4 Medicare billing and coding articles list F89 as a diagnosis that supports medical necessity for the services they cover. From the CMS Medicare Coverage Database; check your own contractor's article before billing.

Other codes that refer to F89

Notes on these codes point to F89.

  • Z55 Excludes1: disorders of psychological development (F80-F89)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

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:

Read more about developmental disabilities on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015.

  • FY2026: New codes for cases coded here before: QA0.0101 (SCN2A-related neurodevelopmental disorder), QA0.0102 (CACNA1A-related neurodevelopmental disorder), QA0.0109 (Neurodevelopmental disorder related to pathogenic variant in other ion channel gene), QA0.011 (Neurodevelopmental disorders, related to pathogenic variants in glutamate receptor genes), QA0.012 (Neurodevelopmental disorders, related to pathogenic variants in other receptor genes), QA0.0131 (SLC6A1-related disorder), QA0.0139 (Neurodevelopmental disorder, related to pathogenic variant in other transporter or solute carrier gene), QA0.0141 (Syntaxin-binding protein 1-related disorder), and 5 more.

ICD-9-CM equivalent

Legacy crosswalk from the CMS General Equivalence Mappings (last updated 2018).

  • 315.9 Unspecified delay in development (approximate)
ICD-9 to ICD-10 converter