2027 ICD-10-CM Diagnosis Code R62.0Delayed milestone in childhood

ICD-10-CM Codes›R00–R99›R50-R69›R62

ICD-10-CM R62.0
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

R62.0 is a billable ICD-10-CM diagnosis code for delayed milestone in childhood. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 640 through 641. The code is restricted by the Medicare Code Editor to pediatric patients (age 0 through 17). 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 delayed milestone. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other general signs and symptoms.

Code Identity

ICD-10-CM Code
R62.0
Billable Status
Yes — Valid for Submission
Code Describes
Delayed milestone in childhood
Short Description
Delayed milestone in childhood
Same as the full description in the CMS dataset.
Parent Code
R62
Lack of expected normal physiological development in childhood and adults

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 CodeR62.0Delayed milestone in childhood

Code EditsBilling

Medicare Code Editor checks that affect claim validity for R62.0.

Pediatric diagnoses
The Medicare Code Editor detects inconsistencies in pediatric cases by checking a patient's age and any diagnosis on the patient's record. The pediatric code edits apply to patients age range is 0–17 years inclusive (e.g., Reye's syndrome, routine child health exam).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Delayed milestone
  • Delayed toilet training
  • Developmental delay in feeding
  • Not yet sitting
  • Not yet speaking
  • Not yet standing
  • Not yet walking

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to R62.0: its own notes plus those printed at R62 and Chapter 18. A note printed at a category, block or chapter applies to every code under it.

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.

  • Delayed attainment of expected physiological developmental stage
  • Late talker
  • Late walker

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From R62 Lack of expected normal physiological development in childhood and adults applies to 6 codes

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.

From Chapter 18 (R00-R99) Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified applies to 774 codes
  • abnormal findings on antenatal screening of mother (O28.-)
  • certain conditions originating in the perinatal period (P04-P96)
  • signs and symptoms classified in the body system chapters
  • signs and symptoms of breast (N63, N64.5)

Notes

General instructions on how these codes are used.

From Chapter 18 (R00-R99) Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified applies to 774 codes
  • This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
  • Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
  • The conditions and signs or symptoms included in categories R00-R94 consist of:
  • (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
  • (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
  • (c) provisional diagnosis in a patient who failed to return for further investigation or care;
  • (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
  • (e) cases in which a more precise diagnosis was not available for any other reason;
  • (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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

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 R62.0 to ICD-9-CMHistory

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

ICD-9-CM
783.42 Delayed milestones
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About R62.0Overview

What is the ICD-10 code for delayed milestone in childhood?

The ICD-10-CM code for delayed milestone in childhood is R62.0 (sometimes written as R620). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is R62.0 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report delayed milestone in childhood on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does R62.0 group to?

When delayed milestone in childhood is the principal diagnosis on an inpatient stay, it groups to MS-DRG 641, 640, with relative weights from 0.7864 to 1.3392 depending on complications. Higher weights mean higher Medicare reimbursement.

Can R62.0 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the delayed milestone in childhood is established, that condition takes the principal position instead.

Who can R62.0 be reported for?

The Medicare Code Editor checks delayed milestone in childhood against patient demographics: this code is intended for pediatric patients (age 0 through 17). Claims outside these limits are flagged as inconsistent.