ICD-9-CM 790.92 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 790.92 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).
An abnormal laboratory test result in which the partial thromboplastin time is found to be greater than the control value. As a possible indicator of coagulopathy, a prolonged partial thromboplastin time (ptt) may occur in a variety of diseases and disorders, both primary and related to treatment