ICD-10-CM 2027
ICD-10 code for development delay
Unspecified lack of expected normal physiological development in childhood
From the official ICD-10-CM alphabetic index entry “Delay, delayed › development”. Page updated September 29, 2026.
About coding development delay
The ICD-10-CM code for development delay is R62.50 (Unspecified lack of expected normal physiological development in childhood). The official index lists 14 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R62.50.
Within R62.5, choose R62.50 (Unspecified lack of expected normal physiological development in childhood) only when documentation doesn't support a more specific option: failure to thrive (child) (R62.51), short stature (child) (R62.52) and other lack of expected normal physiological development in childhood (R62.59).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 640 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC, relative weight 1.3395) and DRG 641 (Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCC, relative weight 0.7865), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific development delay codes (official index)
- global F88 — Other disorders of psychological development
- intellectual (specific) F81.9 — Developmental disorder of scholastic skills, unspecified
- language F80.9 — Developmental disorder of speech and language, unspecified
- due to hearing loss F80.4 — Speech and language development delay due to hearing loss
- learning F81.9 — Developmental disorder of scholastic skills, unspecified
- milestone R62.0 — Delayed milestone in childhood
- pervasive F84.9 — Pervasive developmental disorder, unspecified
- physiological R62.50 — Unspecified lack of expected normal physiological development in childhood
- specified stage NEC R62.0 — Delayed milestone in childhood
- reading F81.0 — Specific reading disorder
- sexual E30.0 — Delayed puberty
- speech F80.9 — Developmental disorder of speech and language, unspecified
- due to hearing loss F80.4 — Speech and language development delay due to hearing loss
- spelling F81.81 — Disorder of written expression
Common questions about development delay ICD-10 codes
What is the ICD-10 code for development delay?
- R62.50 — Unspecified lack of expected normal physiological development in childhood. More specific codes apply when the documentation supports them: F88, F81.9, F80.9, F80.4 and others below.
What is the ICD-10 code for global development delay?
- F88 — Other disorders of psychological development.
What is the ICD-10 code for intellectual development delay?
- F81.9 — Developmental disorder of scholastic skills, unspecified.
What is the ICD-10 code for language development delay?
- F80.9 — Developmental disorder of speech and language, unspecified.
What is the ICD-10 code for learning development delay?
- F81.9 — Developmental disorder of scholastic skills, unspecified.
What is the ICD-10 code for milestone development delay?
- R62.0 — Delayed milestone in childhood.
What is the ICD-10 code for pervasive development delay?
- F84.9 — Pervasive developmental disorder, unspecified.
Is R62.50 billable?
- Yes. R62.50 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R62.50 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R62.50 as a principal diagnosis.
Is R62.50 a CC or MCC?
- No. R62.50 is neither a CC nor an MCC under MS-DRG v44.0.