93786

CPT codes 93784, 93786, 93788, 93790 (2021)


Effective April 1, 2002, a National Coverage Decision was made to allow for Medicare coverage of ABPM for those beneficiaries with suspected “white coat hypertension” (WCH). ABPM involves the use of a non-invasive device, which is used to measure blood pressure in 24-hour cycles. These 24-hour measurements are stored in the device and are later interpreted by a physician. Suspected “WCH” is defined as: (1) Clinic/office blood pressure >140/90 mm Hg on at least three separate clinic/office visits with two separate measurements made at each visit; (2) At least two documented separate blood pressure measurements taken outside the clinic/office which are < 140/90 mm Hg; and (3) No evidence of end-organ damage.

Ambulatory Blood Pressure Monitoring (ABPM) is not covered for any other uses.


The ABPM must be performed for at least 24 hours to meet coverage criteria. Payment is not allowed for institutionalized beneficiaries, such as those receiving Medicare covered skilled nursing in a facility. In the rare circumstance that ABPM needs to be performed more than once for a beneficiary, the qualifying criteria described above must be met for each subsequent ABPM test.

Effective dates for applicable Common Procedure Coding System (HCPCS) codes for ABPM for suspected WCH and their covered effective dates are as follows:

CPT 93784    Ambulatory blood pressure monitoring, utilizing a system such as magnetic tape and/or computer disk, for 24 hours or longer; including recording, scanning analysis, interpretation and report

CPT 93786    Ambulatory blood pressure monitoring, utilizing a system such as magnetic tape and/or computer disk, for 24 hours or longer; recording only

CPT 93788    Ambulatory blood pressure monitoring, utilizing a system such as magnetic tape and/or computer disk, for 24 hours or longer; scanning analysis with report

CPT 93790    Ambulatory blood pressure monitoring, utilizing a system such as magnetic tape and/or computer disk, for 24 hours or longer; physician review with interpretation and report

In addition, the following diagnosis code must be present:

796.2    Elevated blood pressure reading without diagnosis of hypertension

Carrier Claims

Local carriers pay for ABPM services billed with diagnosis code 796.2 and HCPCS codes 93784 or for any combination of CPT 93786, CPT 93788 and CPT 93790, based on the MPFS for the specific HCPCS code billed.

Coinsurance and Deductible

The FIs and local carriers shall apply coinsurance and deductible to payments for ABPM services except for services billed to the FI by FQHCs. For FQHCs only co-insurance applies.

Reference: http://www.cms.gov/Regulations-and-Guidance/Guidance/Manuals/downloads/clm104c32.pdf

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