ICD-9 Code V31.01

Twin birth, mate liveborn, born in hospital, delivered by cesarean section

Not Valid for Submission

V31.01 is a legacy non-billable code used to specify a medical diagnosis of twin birth, mate liveborn, born in hospital, delivered by cesarean section. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: V31.01
Short Description:Twin-mate lb-in hos w cs
Long Description:Twin birth, mate liveborn, born in hospital, delivered by cesarean section

Convert V31.01 to ICD-10

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

  • Z38.31 - Twin liveborn infant, delivered by cesarean

Code Classification

  • Supplementary classification of factors influencing health status and contact with health services (E)
    • Liveborn infants according to type of birth (V30-V39)
      • V31 Twin, mate liveborn

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


Cesarean Section

A Cesarean section (C-section) is surgery to deliver a baby. The baby is taken out through the mother's abdomen. In the United States, almost one in three women has their babies this way. Some C-sections are planned, but many are done when unexpected problems happen during delivery. Reasons for a C-section may include:

  • Health problems in the mother
  • The mother carrying more than one baby
  • The size or position of the baby
  • The baby's health is in danger
  • Labor is not moving along as it should

The surgery is relatively safe for mother and baby. Still, it is major surgery and carries risks. It also takes longer to recover from a C-section than from vaginal birth. It can raise the risk of having difficulties with future pregnancies. Some women may have problems attempting a vaginal birth later. Still, many women are able to have a vaginal birth after cesarean (VBAC).

NIH: National Institute of Child Health and Human Development


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Twins, Triplets, Multiple Births

If you are pregnant with more than one baby, you are far from alone. Multiple births are up in the United States. More women are having babies after age 30 and more are taking fertility drugs. Both boost the chance of carrying more than one baby. A family history of twins also makes multiples more likely.

Years ago, most twins came as a surprise. Now, most women know about a multiple pregnancy early. Women with multiple pregnancies should see their health care providers more often than women who are expecting one baby. Multiple pregnancy babies have a much higher risk of being born prematurely and having a low birth weight. There is also more of a risk of disabilities. Some women have to go on bed rest to delay labor. Finally, they may deliver by C-section, especially if there are three babies or more.

Parenting multiples can be a challenge. Volunteer help and support groups for parents of multiples can help.

Dept. of Health and Human Services Office on Women's Health


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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.