2026 ICD-10-CM Diagnosis Code R62.59Other lack of expected normal physiological development in childhood

ICD-10-CM Codes›R00–R99›R50-R69›R62

ICD-10-CM R62.59
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R62.59 is a billable ICD-10-CM diagnosis code for other 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. Coders also document this condition as abnormal height in relation to growth / age standard. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other general signs and symptoms.

Code Identity

ICD-10-CM Code
R62.59
Billable Status
Yes — Valid for Submission
Code Describes
Other lack of expected normal physiological development in childhood
Short Description
Oth lack of expected normal physiol development 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 CodeR62.59Other lack of expected normal physiological development in childhood

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal height in relation to growth / age standard
  • Congenital generalized hypertrichosis
  • Facial dysmorphism, hypertrichosis, epilepsy, intellectual disability/developmental delay, gingival overgrowth syndrome
  • Height abnormal for age
  • Height above average
  • Lanugo

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.

    • Lack of
      • development (physiological)
        • specified type 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

  • Lanugo

    fine downy hair that covers the body of a human fetus beginning in the fifth month of gestation; it is usually shed by the ninth month of gestation.

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 R62.59 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 R62.59Overview

Is R62.59 a billable code?

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

What MS-DRG does R62.59 group to?

When other 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 R62.59 be a principal diagnosis?

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

What is the ICD-9 equivalent of R62.59?

Under the General Equivalence Mappings, other 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.