Convert ICD-10-CM O11.1 to ICD-9-CM

ICD-10-CM O11.1 converts approximately to:
  • 2015 ICD-9-CM 642.21 Other pre-existing hypertension, complicating pregnancy, childbirth, and the puerperium, delivered, with or without mention of antepartum condition
    or:
  • 2015 ICD-9-CM 642.23 Other pre-existing hypertension, complicating pregnancy, childbirth, and the puerperium, antepartum condition or complication
    or:
  • 2015 ICD-9-CM 642.71 Pre-eclampsia or eclampsia superimposed on pre-existing hypertension, delivered, with or without mention of antepartum condition
    or:
  • 2015 ICD-9-CM 642.73 Pre-eclampsia or eclampsia superimposed on pre-existing hypertension, antepartum condition or complication

Note: approximate conversions between ICD-9-CM codes and ICD-10-CM codes may require clinical interpretation in order to determine the most appropriate conversion code(s) for your specific coding situation.

Source: 2020 ICD-10-CM CMS General Equivalence Mappings.