ICD-9 Diagnosis Code 259.1

Sexual precocity NEC

Diagnosis Code 259.1

ICD-9: 259.1
Short Description: Sexual precocity NEC
Long Description: Precocious sexual development and puberty, not elsewhere classified
This is the 2014 version of the ICD-9-CM diagnosis code 259.1

Code Classification
  • Endocrine, nutritional and metabolic diseases, and immunity disorders
    • Diseases of other endocrine glands (249-259)
      • 259 Other endocrine disorders

Information for Medical Professionals

Code Edits
The following edits are applicable to this code:
Pediatric diagnoses (age 0 through 17) Additional informationCallout TooltipPediatric diagnoses (age 0 through 17)
Pediatric diagnoses: Age range is 0–17 years inclusive.

Convert to ICD-10 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

Index of Diseases and Injuries
References found for the code 259.1 in the Index of Diseases and Injuries:

Information for Patients


Puberty is the time in life when a boy or girl becomes sexually mature. It is a process that usually happens between ages 10 and 14 for girls and ages 12 and 16 for boys. It causes physical changes, and affects boys and girls differently.

In girls:

  • The first sign of puberty is usually breast development.
  • Then hair grows in the pubic area and armpits.
  • Menstruation (or a period) usually happens last.

In boys:

  • Puberty usually begins with the testicles and penis getting bigger.
  • Then hair grows in the pubic area and armpits.
  • Muscles grow, the voice deepens, and facial hair develops as puberty continues.

Both boys and girls may get acne. They also usually have a growth spurt (a rapid increase in height) that lasts for about 2 or 3 years. This brings them closer to their adult height, which they reach after puberty.

NIH: National Institute of Child Health and Human Development

  • Precocious puberty
  • Puberty in boys
  • Puberty in girls

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