Specific code 2014 ICD-9-CM Diagnosis Code 656.20
Isoimmunization from other and unspecified blood-group incompatibility, unspecified as to episode of care or not applicable
  • 2014
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015
  • Maternity Only Dx (12-55 years)
  • Female Only Dx

  • Short description: Abo isoimmunization-unsp.
  • ICD-9-CM 656.20 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 656.20 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 2014 version of ICD-9-CM 656.20.
  • More recent version(s) of ICD-9-CM 656.20: 2015.
Convert to ICD-10-CM: 656.20 converts approximately to:
  • 2015/16 ICD-10-CM O36.1190 Maternal care for Anti-A sensitization, unspecified trimester, not applicable or unspecified
  • 2015/16 ICD-10-CM O36.1990 Maternal care for other isoimmunization, unspecified trimester, not applicable or unspecified
Approximate Synonyms
  • Isoimmunization from irregular blood group incompatibility
  • Isoimmunization irregular blood group incompatibility
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 656.20 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 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.