| Full description | Other and unspecified lack of expected normal physiological development in childhood |
| Billable | No — use a more specific child code |
| Chapter | Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99) |
| Section | General symptoms and signs (R50-R69) |
| Parent code | R62 — Lack of expected normal physiol dev in childhood and adults |