ICD-9 Code 764.00

"Light-for-dates" without mention of fetal malnutrition, unspecified [weight]

Not Valid for Submission

764.00 is a legacy non-billable code used to specify a medical diagnosis of "light-for-dates" without mention of fetal malnutrition, unspecified [weight]. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: 764.00
Short Description:Light-for-dates wtNOS
Long Description:"Light-for-dates" without mention of fetal malnutrition, unspecified [weight]

Convert 764.00 to ICD-10

The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:

  • P05.00 - Newborn light for gestational age, unspecified weight
  • P05.10 - Newborn small for gestational age, unspecified weight

Code Classification

  • Certain conditions originating in the perinatal period (760–779)
    • Other conditions originating in the perinatal period (764-779)
      • 764 Slow fetal growth and fetal malnutrition

Information for Medical Professionals

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-9 Code Edits are applicable to this code:

Information for Patients


Birth Weight

Birth weight is the first weight of your baby, taken just after he or she is born. A low birth weight is less than 5.5 pounds. A high birth weight is more than 8.8 pounds.

A low birth weight baby can be born too small, too early (premature), or both. This can happen for many different reasons. They include health problems in the mother, genetic factors, problems with the placenta and substance abuse by the mother.

Some low birth weight babies may be more at risk for certain health problems. Some may become sick in the first days of life or develop infections. Others may suffer from longer-term problems such as delayed motor and social development or learning disabilities.

High birth weight babies are often big because the parents are big, or the mother has diabetes during pregnancy. These babies may be at a higher risk of birth injuries and problems with blood sugar.

Centers for Disease Control and Prevention

  • Large for gestational age (LGA)
  • Neonatal weight gain and nutrition
  • Small for gestational age (SGA)

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ICD-9 Footnotes

General Equivalence Map Definitions
The ICD-9 and ICD-10 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.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.