Full Answer
As of October 2015, ICD-9 codes are no longer used for medical coding. Instead, use the following six equivalent ICD-10-CM codes, which are an approximate match to ICD-9 code 642.03:
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
642.03 is a legacy non-billable code used to specify a medical diagnosis of benign essential hypertension complicating pregnancy, childbirth, and the puerperium, antepartum condition or complication. This code was replaced on September 30, 2015 by its ICD-10 equivalent.
Or you may get it once you are pregnant - a condition called gestational hypertension. Either one can cause low birth weight or premature delivery of the baby.
As of October 2015, ICD-9 codes are no longer used for medical coding. Instead, use this equivalent ICD-10-CM code, which is an exact match to ICD-9 code 642.0:
Non-Billable means the code is not sufficient justification for admission to an acute care hospital when used a principal diagnosis. Use a child code to capture more detail.