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A4670

PAYER POLICY CHANGES

A4670 Insurance Policy Changes

Q: Does AmeriHealth Caritas require prior authorization for A4670?

AmeriHealth Caritas lists A4670 on AmeriHealth Caritas Louisiana Act 233 prior authorization service list for medicaid managed plans, with conditions. Verify with the payer before scheduling.

Q: Does Anthem BCBS require prior authorization for A4670?

Anthem BCBS lists A4670 on List of items and services that require prior authorization (Medicare) for medicare advantage plans (list dated February 11, 2026). Verify with the payer before scheduling.

Q: Does BCBS Michigan require prior authorization for A4670?

BCBS Michigan lists A4670 on BCBSM and BCN procedure codes for which providers must request prior authorization (commercial lines) for commercial plans, with conditions (list dated October 13, 2026). Verify with the payer before scheduling.

Q: Does CalViva Health require prior authorization for A4670?

CalViva Health lists A4670 on CalViva Health CMS-0057-F prior authorization requirements for medicaid managed plans (list dated December 31, 2025). Verify with the payer before scheduling.

Q: Does Colorado Medicaid require prior authorization for A4670?

Colorado Medicaid lists A4670 on Colorado Health First Colorado Fee Schedule (Prior Authorization Needed column) for medicaid ffs plans (list dated July 1, 2026). Verify with the payer before scheduling.

Q: What insurance policy changes affect HCPCS A4670?

There are 7 tracked policy changes affecting HCPCS A4670, including updates from Blue Shield of California, Arkansas Medicaid, NY Medicaid. Each change may modify coverage criteria, reimbursement rates, or prior-authorization requirements.

Q: Which payers have updated policy for HCPCS A4670?

Payers that have issued tracked updates for HCPCS A4670 include: Blue Shield of California, Arkansas Medicaid, NY Medicaid, Aetna, Blue Cross & Blue Shield of Mississippi.

Q: How do I get notified when HCPCS A4670 policy changes?

Create a free account at PolicyChanges.app and save a search filtered to HCPCS A4670. You will get an email when new policy changes reference this code: daily or weekly, your choice, on every plan.

Q: Why do payers change policies for HCPCS A4670?

Payers revise policies for individual billing codes to align with updated clinical guidelines, CMS rule changes, fraud and abuse prevention measures, or network cost-management goals. Changes can affect medical necessity criteria, place-of-service restrictions, bundling rules, or whether a code requires prior authorization.

HCPCS A4670 is officially defined as "Automatic blood pressure monitor." HCPCS A4670 is referenced in 7 tracked payer policy changes from Blue Shield of California, Arkansas Medicaid, and 3 other payers. For billers and coders, staying current on payer-specific coverage criteria, reimbursement rules, and prior-authorization requirements for HCPCS A4670 is critical to clean claim submission. Each entry below links to the full policy analysis with effective dates and action steps.

Blue Shield of California · Effective Nov 1, 2026Medium impact
Automated Ambulatory Blood Pressure Monitoring for Diagnosis of Hypertension in Patients with Elevated Office Blood Pressure (1.01.02)
Blue Shield of California's medical policy 1.01.02 on automated 24-hour ambulatory blood pressure monitoring for diagnosing hypertension has an effective date of November 1, 2026. The policy statement covers this monitoring when it is performed 1 time to differentiate white coat hypertension from true hypertension and when one of two sets of criteria is met. For individuals aged 13 and older, office blood pressure should be SBP greater than or equal to 130 or DBP greater than or equal to 80 mmHg and less than 160/100 mmHg; for individuals younger than 13, office BP should be the lower of at or above the 95th percentile based on gender, age and height per the AAP 2017 pediatric tables, or at or above the adult cutoff; and in both cases the clinical presentation should not require immediate initiation of antihypertensive medication based on the severity of BP elevation or acute hypertensive end-organ injury.
Arkansas Medicaid · Effective Sep 1, 2026Medium impact
Purchase of Blood Pressure Monitor and Cuff Covered for High-Risk Pregnancies and Postpartum
Arkansas Medicaid is expanding coverage for blood pressure monitors and cuffs for eligible members with high-risk pregnancies and/or in the postpartum period, effective September 1, 2026. Two new HCPCS codes (A4663 and A4670) are now covered under the MEDSP contract at specified rates, with a limit of one monitor and one cuff per nine-month period.
NY Medicaid · Identified Oct 31, 2026Medium impact
NYRx Pharmacy Drug Coverage: Claims Processing Enhancements and Reminders
This is a historical policy document (published September 1, 2026, discovered October 31, 2026) detailing NYRx pharmacy claims processing edits and rejection rules for non-covered drugs in New York Medicaid. The document describes existing claim edit mechanics for drugs not on the formulary, lacking federal rebate agreements, identified as DESI drugs, excluded from state plan coverage, or terminated by manufacturers. No new effective dates are stated; the policy reinforces longstanding coverage exclusions and references prior guidance from 2018, 2020, and 2025.
Aetna · Identified Oct 2, 2026Medium impact
Cardiovascular Monitoring Equipment for Home Use: Pulse, Blood Pressure, Telemonitors, and Pacemaker Monitors (CPB 0548, reviewed 2026-08-21)
Aetna considers validated home blood pressure monitors medically necessary as an alternative to ambulatory blood pressure monitoring to confirm hypertension in members age 18 and older with office readings greater than 140 systolic or 90 diastolic. Validated blood pressure monitors are considered medically necessary for members receiving hemodialysis or peritoneal dialysis in the home, and validated blood pressure cuffs are considered medically necessary durable medical equipment for members with hypertension. Self-contained pacemaker monitors, including audible and visible signal monitors, digital electronic monitors, and a specialized telephone attachment for trans-telephonic transmission of results, are considered medically necessary for members with cardiac pacemakers. Automated oscillometer serial blood pressure monitors for home use, AngelMed Guardian, CardioMEMS pillow and components, home and implantable congestive heart failure monitors, implantable inferior vena cava sensors, implantable wireless pulmonary artery pressure monitors for heart failure, Zoll Heart Failure and Arrhythmia Management System, bioelectrical impedance analysis, and non-invasive central blood pressure assessment with SphygmoCor are considered experimental, investigational, or unproven. Pulse tachometers do not meet Aetna's definition of covered durable medical equipment.
Aetna · Identified Oct 1, 2026Medium impact
Dialysis (CPB 0541, reviewed 2026-08-26)
Aetna's dialysis policy (CPB 0541), last reviewed 08/26/2026, considers hemodialysis or intermittent peritoneal dialysis up to 3 times per week medically necessary for renal failure. More frequent dialysis is considered medically necessary when hyperkalemia, hypophosphatemia, pregnancy, fluid overload, acute pericarditis, congestive heart failure, pulmonary edema or severe catabolic state is refractory to dialysis 3 times per week. Home hemodialysis equipment, supplies and skilled nursing visits are considered medically necessary when prescribed by a physician for members with end stage renal disease, and the equipment is usually rented during the first 30 months of hemodialysis.
Aetna · Identified Aug 15, 2026Medium impact
Cardiovascular Monitoring Equipment for Home Use: Pulse, Blood Pressure, Telemonitors, and Pacemaker Monitors (CPB 0548, reviewed 2025-08-22)
Aetna considers validated home blood pressure monitors medically necessary as an alternative to ambulatory blood pressure monitoring to confirm hypertension in members age 18 and older with office readings greater than 140 systolic or 90 diastolic, when the cuff is prescribed by a physician, is an arm device, has the correct cuff size assessed and provided by the vendor, and only one cuff per 5 years is considered medically necessary. Validated blood pressure monitors are also considered medically necessary for members receiving hemodialysis or peritoneal dialysis in the home, and self-contained pacemaker monitors are considered medically necessary for members with cardiac pacemakers. Pulse tachometers do not meet Aetna's definition of covered DME, and the following are considered experimental, investigational, or unproven: AngelMed Guardian, automated oscillometer serial blood pressure monitors for home use, bioelectrical impedance analysis, CardioMEMS, home congestive heart failure telemonitoring devices, implantable congestive heart failure monitors, the implantable inferior vena cava sensor, non-invasive central blood pressure assessment with the SphygmoCor System, and the Zoll Heart Failure and Arrhythmia Management System for monitoring pulmonary fluid levels. The bulletin is titled CPB 0548, reviewed 2025-08-22, with a last review of 08/21/2026.
Blue Cross & Blue Shield of Mississippi · Identified Jun 20, 2026Medium impact
Automated Ambulatory Blood Pressure Monitoring for the Diagnosis of Hypertension in Patients with Elevated Office Blood Pressure
Automated 24-hour ambulatory blood pressure monitoring may be considered medically necessary for individuals with elevated office blood pressure when it is performed one time to differentiate between white coat hypertension and true hypertension, the office blood pressure elevation is in the mild-to-moderate range (<180/110 mm Hg) and does not require immediate treatment with medications, and there is an absence of hypertensive end-organ damage on physical examination and laboratory testing. All other uses are considered investigational, including repeated testing in individuals with persistently elevated office blood pressure and monitoring of treatment effectiveness. For pediatric individuals, the policy follows the 2022 American Heart Association guidelines on ambulatory blood pressure monitoring in children and adolescents, including selecting a device with a cuff size appropriate to the child and using pediatric normative data for thresholds.

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REFERENCE DATA

Payers with rules6

Payers requiring prior auth6

BCBS Michigan · Effective October 13, 2026
Prior authorization required in some cases
BCBSM and BCN procedure codes for which providers must request prior authorization (commercial lines)
Colorado Medicaid · Effective July 1, 2026
Prior authorization required
Colorado Health First Colorado Fee Schedule (Prior Authorization Needed column)
Anthem BCBS · Effective February 11, 2026
Prior authorization required
List of items and services that require prior authorization (Medicare)

FREQUENTLY ASKED QUESTIONS

Does AmeriHealth Caritas require prior authorization for A4670?

AmeriHealth Caritas lists A4670 on AmeriHealth Caritas Louisiana Act 233 prior authorization service list for medicaid managed plans, with conditions. Verify with the payer before scheduling.

Does Anthem BCBS require prior authorization for A4670?

Anthem BCBS lists A4670 on List of items and services that require prior authorization (Medicare) for medicare advantage plans (list dated February 11, 2026). Verify with the payer before scheduling.

Does BCBS Michigan require prior authorization for A4670?

BCBS Michigan lists A4670 on BCBSM and BCN procedure codes for which providers must request prior authorization (commercial lines) for commercial plans, with conditions (list dated October 13, 2026). Verify with the payer before scheduling.

Does CalViva Health require prior authorization for A4670?

CalViva Health lists A4670 on CalViva Health CMS-0057-F prior authorization requirements for medicaid managed plans (list dated December 31, 2025). Verify with the payer before scheduling.

Does Colorado Medicaid require prior authorization for A4670?

Colorado Medicaid lists A4670 on Colorado Health First Colorado Fee Schedule (Prior Authorization Needed column) for medicaid ffs plans (list dated July 1, 2026). Verify with the payer before scheduling.

What insurance policy changes affect HCPCS A4670?

There are 7 tracked policy changes affecting HCPCS A4670, including updates from Blue Shield of California, Arkansas Medicaid, NY Medicaid. Each change may modify coverage criteria, reimbursement rates, or prior-authorization requirements.

Which payers have updated policy for HCPCS A4670?

Payers that have issued tracked updates for HCPCS A4670 include: Blue Shield of California, Arkansas Medicaid, NY Medicaid, Aetna, Blue Cross & Blue Shield of Mississippi.

How do I get notified when HCPCS A4670 policy changes?

Create a free account at PolicyChanges.app and save a search filtered to HCPCS A4670. You will get an email when new policy changes reference this code: daily or weekly, your choice, on every plan.

Why do payers change policies for HCPCS A4670?

Payers revise policies for individual billing codes to align with updated clinical guidelines, CMS rule changes, fraud and abuse prevention measures, or network cost-management goals. Changes can affect medical necessity criteria, place-of-service restrictions, bundling rules, or whether a code requires prior authorization.

See every payer rule for A4670

Prior authorization lists, coverage criteria, NCCI edits and Medicare coverage articles for A4670 in one place.

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All billing codes J3590 C9399 J3490 99215 99213 99202

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Automated Ambulatory Blood Pressure Monitoring for Diagnosis of Hypertension in Patients with Elevated Office Blood Pressure (1.01.02)

Purchase of Blood Pressure Monitor and Cuff Covered for High-Risk Pregnancies and Postpartum

NYRx Pharmacy Drug Coverage: Claims Processing Enhancements and Reminders

Cardiovascular Monitoring Equipment for Home Use: Pulse, Blood Pressure, Telemonitors, and Pacemaker Monitors (CPB 0548, reviewed 2026-08-21)

Dialysis (CPB 0541, reviewed 2026-08-26)

Cardiovascular Monitoring Equipment for Home Use: Pulse, Blood Pressure, Telemonitors, and Pacemaker Monitors (CPB 0548, reviewed 2025-08-22)

Automated Ambulatory Blood Pressure Monitoring for the Diagnosis of Hypertension in Patients with Elevated Office Blood Pressure

Prior authorization required in some cases

Prior authorization required