R62.50Unspecified lack of expected normal physiological development in childhood

R62.50 is the ICD-10-CM diagnosis code for unspecified lack of expected normal physiological development in childhood. It belongs to category R62 (lack of expected normal physiological development in childhood and adults), block R50-R69 (general symptoms and signs) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

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.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 783.40 (lack of normal physiological development, unspecified).