ICD-9 Code 646.12

Edema or excessive weight gain in pregnancy, without mention of hypertension, delivered, with mention of postpartum complication

  1. ICD-9 Index
  2. Chapter: 630–679
  3. Section: 640-649
  4. Block: 646 Other complications of pregnancy, not elsewhere classified
  5. 646.12 - Edema in preg-del w p/p

Not Valid for Submission

646.12 is a legacy non-billable code used to specify a medical diagnosis of edema or excessive weight gain in pregnancy, without mention of hypertension, delivered, with mention of postpartum complication. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: 646.12
Short Description:Edema in preg-del w p/p
Long Description:Edema or excessive weight gain in pregnancy, without mention of hypertension, delivered, with mention of postpartum complication

Convert 646.12 to ICD-10

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

  • O12.01 - Gestational edema, first trimester
  • O12.02 - Gestational edema, second trimester
  • O12.03 - Gestational edema, third trimester

Code Classification

  • Complications of pregnancy, childbirth, and the puerperium (630–679)
    • Complications mainly related to pregnancy (640-649)
      • 646 Other complications of pregnancy, not elsewhere classified

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:

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.

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Related Codes

Next Code: 646.13