R62.0 Delayed milestone in childhood

Billable ICD-10-CM code, FY2026.

Applicable to

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

Applies from R62 Lack of expected normal physiological development in childhood and adults

Excludes1 (never code together)

• delayed puberty (E30.0)
• gonadal dysgenesis (Q99.1)
• hypopituitarism (E23.0)

MS-DRG index

Defines the logic of DRG(s) 640-641 in MDC 10.

Approximate ICD-9-CM (GEMs)

• 783.42 Delayed milestones

Medicare Code Edits (MCE v43.1 (April 2026))

• Pediatric diagnoses (age 0 through 17): Age conflict edit. These diagnoses are clinically expected only in patients age 0 through 17.

Diagnosis Index entries for R62.0

• Delay, delayed › development › milestone
• Delay, delayed › development › physiological › specified stage NEC
• Delay, delayed › milestone
• Late › talker
• Late › walker

Nearby codes

• R62 Lack of expected normal physiological development in childhood and adults
• R62.0 Delayed milestone in childhood (this code)
• R62.5 Other and unspecified lack of expected normal physiological development in childhood
• R62.50 Unspecified lack of expected normal physiological development in childhood
• R62.51 Failure to thrive (child)
• R62.52 Short stature (child)
• R62.59 Other lack of expected normal physiological development in childhood