2026 ICD-10-CM Diagnosis Code R62.50Unspecified lack of expected normal physiological development in childhood

ICD-10-CM Codes›R00–R99›R50-R69›R62

ICD-10-CM R62.50
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R62.50 is a billable ICD-10-CM diagnosis code for unspecified lack of expected normal physiological development in childhood. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 640 through 641. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other general signs and symptoms.

Code Identity

ICD-10-CM Code
R62.50
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified lack of expected normal physiological development in childhood
Short Description
Unsp lack of expected normal physiol dev in childhood
Parent Code
R62.5
Other and unspecified lack of expected normal physiological development in childhood

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR50-R69General symptoms and signs
CategoryR62Lack of expected normal physiological development in childhood and adults
This CodeR62.50Unspecified lack of expected normal physiological development in childhood

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • 10p partial monosomy syndrome
  • Absence of teeth
  • Altered growth and development
  • Amino acid below reference range
  • Body growth problem
  • Body weight AND/OR growth problem
  • Child developmental finding
  • Childhood growth AND/OR development alteration
  • CIMDAG syndrome
  • Congenital cataract, hearing loss, severe developmental delay syndrome
  • Congenital cataract, progressive muscular hypotonia, hearing loss, developmental delay syndrome
  • Congenital prognathism
  • Congenital sideroblastic anemia, B-cell immunodeficiency, periodic fever, developmental delay syndrome
  • Delay in physiological development
  • Delayed growth and development
  • Deletion of part of chromosome 10
  • Deletion of part of chromosome 5
  • Deletion of part of long arm of chromosome 5
  • DEND syndrome
  • Developmental delay
  • Developmental delay, immunodeficiency, leukoencephalopathy, hypohomocysteinemia syndrome
  • Developmental delay, overweight, facial dysmorphism, behavioral abnormalities syndrome
  • Facial dysmorphism, developmental delay, behavioral abnormalities syndrome due to 10p11.21p12.31 microdeletion
  • Fallot complex with intellectual disability and growth delay syndrome
  • False anodontia
  • Familial visceral neuropathy
  • FBLN1-related developmental delay, central nervous system anomaly, syndactyly syndrome
  • Finding of infant milestone
  • Game Friedman Paradice syndrome
  • GAPO syndrome
  • GNAO1-related developmental delay, seizures, movement disorder spectrum
  • GRACILE syndrome
  • GRIN2B-related developmental delay, intellectual disability, autism spectrum disorder
  • Growth and developmental delay, hypotonia, vision impairment, lactic acidosis syndrome
  • Growth delay, intellectual disability, hepatopathy syndrome
  • Growth retardation, mild developmental delay, chronic hepatitis syndrome
  • Hereditary congenital hypomelanotic and hypermelanotic cutaneous macules, growth retardation, intellectual disability syndrome
  • Impairment of adolescent development
  • Impairment of child development
  • Impairment of infant development
  • Impairment of newborn development
  • Inadequate achievement of developmental tasks
  • Inadequate maintenance of developmental tasks
  • Intellectual disability, developmental delay, contracture syndrome
  • Intermediate DEND syndrome
  • Joint contractures, developmental delay, Pierre Robin syndrome
  • MYT1L-related developmental delay, intellectual disability, obesity syndrome
  • Neonatal diabetes mellitus
  • Obesity, colitis, hypothyroidism, cardiac hypertrophy, developmental delay syndrome
  • Osteosclerosis, developmental delay, craniosynostosis syndrome
  • Pentose disorder
  • Physiological development failure
  • Problem of growth and development
  • Robin sequence
  • Severe combined immunodeficiency with low T- and B-cell numbers
  • Severe combined immunodeficiency, microcephaly, growth retardation, sensitivity to ionizing radiation syndrome
  • Short stature, developmental delay, congenital heart defect syndrome
  • Sonoda syndrome
  • Tetralogy of Fallot
  • Tooth absent
  • Visceral neuropathy and brain anomaly with facial dysmorphism and developmental delay syndrome
  • WAC-related facial dysmorphism, developmental delay, behavioral abnormalities syndrome
  • X-linked microcephaly, growth retardation, prognathism, cryptorchidism syndrome

Tabular List NotesGuidance

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

Inclusion Terms

  • Infantilism NOS

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Arrest, arrested
      • development or growth
        • child
    • Delay, delayed
      • development
    • Delay, delayed
      • development
        • physiological
    • Development
      • arrested
    • Development
      • arrested
        • child
    • Development
      • delayed
    • Inadequate, inadequacy
      • development
        • child
    • Lack of
      • development (physiological)
    • Retardation
      • growth
    • Symptoms NEC
      • involving
        • development NEC

Clinical ClassificationClinical

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

CCSR SYM016
Other general signs and symptoms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Tetralogy of Fallot

    a combination of congenital heart defects consisting of four key features including ventricular septal defects; pulmonary stenosis; right ventricular hypertrophy; and a dextro-positioned aorta. in this condition, blood from both ventricles (oxygen-rich and oxygen-poor) is pumped into the body often causing cyanosis.

Patient EducationClinical

Child Development

As children grow older, they develop in several different ways. Child development includes physical, intellectual, social, and emotional changes.

Read the full article at MedlinePlus

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

Convert R62.50 to ICD-9-CMHistory

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

ICD-9-CM
783.40 Lack norm physio dev NOS
Approximate The match is approximate rather than exact.

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 R62.50Overview

Is R62.50 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report unspecified lack of expected normal physiological development in childhood on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does R62.50 group to?

When unspecified lack of expected normal physiological development in childhood is the principal diagnosis on an inpatient stay, it groups to MS-DRG 640, 641, with relative weights from 0.7782 to 1.3356 depending on complications. Higher weights mean higher Medicare reimbursement.

Can R62.50 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the unspecified lack of expected normal physiological development in childhood is established, that condition takes the principal position instead.

What is the ICD-9 equivalent of R62.50?

Under the General Equivalence Mappings, unspecified lack of expected normal physiological development in childhood converts to ICD-9-CM 783.40 (lack norm physio dev NOS). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.