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Coding Analysis for Labs (CAL) Tracking Sheet for Partial Thromboplastin Time (PTT) (Addition of ICD-9-CM V58.83, Encounter for therapeutic drug monitoring, as a covered indication) (CAG-00338N)

CMS received an external request to add ICD-9-CM V58.83, Encounter for therapeutic drug monitoring, as a covered indication for the Partial Thromboplastin Time (PTT) NCD at 190.16 of the NCD manual.

We are seeking public comment on the addition of code V58.83 to the ICD-9-CM Codes Covered By Medicare list for the PTT NCD.

The regulation for maintaining code lists in the negotiated NCDs for clinical diagnostic laboratory services states that codes on the covered list flow from the existing NCD narratives of covered indication.  The regulation was published February 25, 2005 in the Federal Register, Vol.70, No. 37 and can be viewed at

Diagnostic Laboratory Tests
Requestor Name(s)Susan K. Taylor Proctor, RHIT, CCS
Formal Request Accepted and Review Initiated07/24/2006
Expected NCA Completion Date10/24/2006
Public Comment Period07/24/2006 - 08/23/2006
Decision Memo Released10/03/2006
Lead Analyst(s)
  • Maria Ciccanti
Lead Medical Officer(s)
  • Jim Rollins, MD, MSHA, PhD

July 24, 2006

CMS accepts a request to add ICD-9-CM code V58.83.0 as a covered indication in the Partial Thromboplastin Time national coverage determination list of covered indications.

The initial 30-day public comment period begins with this acceptance date, and ends after 30 calendar days.  CMS considers all public comments, and is particularly interested in clinical studies and other scientific information relevant to the test under consideration.

October 3, 2006

Posted decision memo.