Home > 2009 ICD-9-CM Diagnosis Codes > Complications Of Pregnancy, Childbirth, And The Puerperium 630-679 > Complications Mainly Related To Pregnancy 640-649 > Hypertension complicating pregnancy childbirth and the puerperium 642-
Specific code 2009 ICD-9-CM Diagnosis Code 642.00
Benign essential hypertension complicating pregnancy childbirth and the puerperium unspecified as to episode of care
  • Short description: ESSEN HYPERTEN PREG-UNSP.
  • ICD-9-CM 642.00 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 642.00 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 2009 version of ICD-9-CM 642.00.
  • More recent version(s) of ICD-9-CM 642.00: 2010 2011 2012 2013 2014 2015.
Convert to ICD-10-CM: 642.00 converts approximately to:
  • 2015/16 ICD-10-CM O10.019 Pre-existing essential hypertension complicating pregnancy, unspecified trimester
    Or:
  • 2015/16 ICD-10-CM O10.919 Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester
Approximate Synonyms
  • Benign essential hypertension, chronic, after childbirth
  • Preexisting essential HTN, postpartum
  • Preexisting essential hypertension in postpartum
  • Preexisting high blood pressure, postpartum (after childbirth)
  • Preexisting HTN, postpartum
  • Pre-existing hypertension complicating AND/OR reason for care during puerperium
 642.0 ICD9Data.com 642.01 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 642.00 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 2009 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
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