Home > 2011 ICD-9-CM Diagnosis Codes > Complications Of Pregnancy, Childbirth, And The Puerperium 630-679 > Normal Delivery, And Other Indications For Care In Pregnancy, Labor, And Delivery 650-659 > Other known or suspected fetal and placental problems affecting management of mother 656-
Specific code 2011 ICD-9-CM Diagnosis Code 656.21
Isoimmunization from other and unspecified blood-group incompatibility affecting management of mother delivered
  • Short description: Abo isoimmunizat-deliver.
  • ICD-9-CM 656.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 656.21 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
  • You are viewing the 2011 version of ICD-9-CM 656.21.
  • More recent version(s) of ICD-9-CM 656.21: 2012 2013 2014 2015.
Convert to ICD-10-CM: 656.21 converts approximately to:
  • 2015/16 ICD-10-CM O36.1110 Maternal care for Anti-A sensitization, first trimester, not applicable or unspecified
    Or:
  • 2015/16 ICD-10-CM O36.1120 Maternal care for Anti-A sensitization, second trimester, not applicable or unspecified
    Or:
  • 2015/16 ICD-10-CM O36.1130 Maternal care for Anti-A sensitization, third trimester, not applicable or unspecified
    Or:
  • 2015/16 ICD-10-CM O36.1910 Maternal care for other isoimmunization, first trimester, not applicable or unspecified
    Or:
  • 2015/16 ICD-10-CM O36.1920 Maternal care for other isoimmunization, second trimester, not applicable or unspecified
    Or:
  • 2015/16 ICD-10-CM O36.1930 Maternal care for other isoimmunization, third trimester, not applicable or unspecified
 656.20 ICD9Data.com 656.23 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 656.21 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2011 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
Free ICD-9-CM Codes
Site Information
Free ICD-10-CM/PCS Codes
Free HCPCS Codes