HCPCS Code A4707: Description, Medicare coverage, and billing guide

Key Takeaways

HCPCS Code A4707 is a Level II alphanumeric code describing non-DEHP medical tubing maintained by CMS for DME supply billing.

Medicare Part B may cover A4707 under applicable Local Coverage Determinations; eligibility depends on your DME MAC jurisdiction.

Never hardcode reimbursement dollar amounts for A4707 – rates change annually and must be verified via the CMS DMEPOS fee schedule lookup.

Pabau’s claims management software streamlines HCPCS code entry, claim generation, and reimbursement tracking for DME and supply billers.

Most claim denials for DME supply codes aren’t caused by using the wrong code. They come from incomplete documentation, mismatched modifiers, or submitting to the wrong payer jurisdiction. HCPCS Code A4707, a Level II supply code for non-DEHP medical tubing, is a routine billing line item that routinely triggers avoidable denials when submitted without the supporting clinical record. This reference guide covers the official descriptor, Medicare coverage rules, current fee schedule guidance, billing steps, applicable modifiers, and the documentation your MAC needs to process the claim cleanly.

HCPCS Code A4707: definition and official descriptor

HCPCS Code A4707 is classified under the A-series of HCPCS Level II, the alphanumeric code set maintained by the Centers for Medicare and Medicaid Services (CMS) for supplies, equipment, and services not covered by CPT. The A-series (codes A4000 through A9999) captures medical and surgical supplies, administrative supplies, and durable medical equipment accessories.

The official CMS descriptor for A4707 is: Tubing, non-DEHP, for use with infusion pump. DEHP (di(2-ethylhexyl) phthalate) is a plasticizer used in standard PVC medical tubing. Non-DEHP tubing is required for specific patient populations, particularly neonates and patients receiving chemotherapy or lipid emulsions, where DEHP leaching poses a documented clinical risk.

Code classification at a glance

Medicare coverage and eligibility for HCPCS Code A4707

Medicare Part B covers DME supplies under certain conditions, and A4707 falls within that coverage umbrella when the underlying infusion pump therapy is medically necessary and covered. According to CMS, coverage for A-series supply codes is typically governed by Local Coverage Determinations (LCDs) issued by each Durable Medical Equipment Medicare Administrative Contractor (DME MAC).

There are four DME MACs responsible for administering Medicare DME coverage across the US: Noridian Healthcare Solutions (Jurisdictions A and D), CGS Administrators (Jurisdictions B and C), and Palmetto GBA. The applicable LCD for A4707 will depend on which jurisdiction your supplier is enrolled in. Before billing, verify coverage under your specific MAC’s policies.

Coverage for non-DEHP tubing specifically requires that the prescribing physician has documented a clinical reason for using DEHP-free tubing rather than standard tubing. This is where most facilities trip: they bill A4707 as if it were interchangeable with standard infusion tubing codes, without the supporting clinical rationale in the chart.

Core eligibility criteria

• The patient has a covered Medicare Part B diagnosis requiring infusion pump therapy
• A physician order specifies non-DEHP tubing by clinical indication (not simply by preference)
• The supplier is enrolled as a Medicare DME supplier in the appropriate MAC jurisdiction
• The non-DEHP requirement is documented in the medical record and supported by a written order
• The claim is submitted through the appropriate DME supplier number, not under the rendering physician’s NPI alone

Medicaid coverage varies significantly by state. Some state Medicaid programs mirror Medicare DME coverage policies; others impose stricter prior authorization requirements for non-standard supply variants like A4707. Always verify with your state Medicaid agency before assuming coverage.

Reimbursement rates and HCPCS A4707 fee schedule

CMS updates the DMEPOS (Durable Medical Equipment, Prosthetics, Orthotics, and Supplies) fee schedule annually. Specific dollar amounts for A4707 are subject to change each fiscal year, and hardcoding a rate in a billing policy document is a known denial risk. Instead, use the CMS Physician Fee Schedule lookup tool to retrieve the current allowed amount for your jurisdiction.

Fee schedule lookups for DMEPOS supply codes require selecting the correct pricing locality. Non-DEHP tubing, classified as a supply accessory rather than a piece of durable equipment, is priced at the national limitation amount in most jurisdictions. Regional variation can apply based on competitive bidding program status.

Where to find current A4707 rates

• CMS DMEPOS fee schedule: downloadable annual files at cms.gov, updated each January
• DME MAC contractor portals: Noridian, CGS, and Palmetto GBA each publish jurisdiction-specific allowable amounts and any competitive bidding adjustments
• AAPC Codify: AAPC’s HCPCS code lookup cross-references current fee schedule data
• PGM Billing HCPCS tool: PGM Billing’s free HCPCS lookup pulls CMS data and shows pricing flags

Practices using integrated claims management software can automate fee schedule lookups and flag HCPCS supply codes flagged for annual pricing updates, reducing the manual overhead of verifying rates before submission.

Billing guidelines and claim submission for A4707

Claims for HCPCS Code A4707 are submitted on the CMS-1500 paper form or its electronic equivalent, the 837P transaction. DME supplier claims may also use the 837D in some payer contexts. The steps below apply to standard Medicare Part B claim submission through a DME supplier.

Step-by-step claim submission

1. Verify supplier enrollment: Confirm your DME supplier NPI is active and enrolled in the correct MAC jurisdiction before submitting any A-series supply claim.
2. Obtain a valid written order: The prescribing physician must provide a written order specifying non-DEHP tubing. Verbal orders documented after the fact are a frequent denial trigger.
3. Enter A4707 in Box 24D: On the CMS-1500 form, enter code A4707 in field 24D (Procedures/Services/Supplies). Do not use a CPT code as a substitute.
4. Enter quantity and units: Box 24G records the units billed. Confirm your MAC’s quantity billing rules for tubing, as some LCDs cap the number of units per claim period.
5. Apply the correct place of service: Place of service code 12 (home) is typical for home infusion pump supplies. Use the code matching the actual care setting.
6. Attach or link supporting documentation: Depending on payer requirements, attach the clinical order, diagnosis code, and rationale for non-DEHP tubing. Electronic claims use the digital forms workflow or document submission portal.
7. Submit and track: Monitor remittance advice for CARC (Claim Adjustment Reason Codes) and RARC (Remittance Advice Remark Codes) specific to A4707 if the claim is adjusted or denied.

Good medical documentation practices at the point of care significantly reduce rework downstream. When the clinical rationale for non-DEHP tubing is captured at the time of the order, billing teams spend less time chasing records before claim submission.

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Applicable modifiers for HCPCS Code A4707

Modifiers clarify the circumstances of a supply claim. For A4707, the modifiers most likely to apply relate to delivery method, new versus replacement supply, and Medicare Secondary Payer situations. Your DME MAC’s LCD will list which modifiers are required or permitted for a given supply code. Always verify with your MAC before appending a modifier not explicitly listed.

The KX modifier is the one most billers forget. Without it, many MACs will automatically deny A4707 claims on first review, treating the absence of KX as a signal that documentation requirements have not been met. Include it whenever your records confirm the clinical criteria in the applicable LCD are satisfied.

Documentation requirements

Documentation for A4707 claims follows the standard DME supply framework: a valid written order, a clinical rationale, and evidence that the billed item was actually dispensed. What makes A4707 different from generic tubing codes is the DEHP-specific rationale, which must be explicit in the chart.

• Written order: Signed and dated by the treating physician; specifies “non-DEHP tubing” explicitly (not just “infusion tubing”)
• Clinical indication: Documented diagnosis code(s) supporting infusion pump therapy and the reason DEHP-free materials are medically necessary
• Patient demographics: Date of birth, Medicare beneficiary identifier (MBI), and supplier NPI on file
• Dispensing record: Proof of delivery (POD) showing the tubing was delivered or dispensed, with date and patient/authorized representative signature
• Refill documentation: For ongoing supplies, a refill request documented at the appropriate interval per your MAC’s policy (typically every 1-3 months)

Keeping HIPAA-compliant documentation workflows in place means these records are retrievable quickly during a post-payment audit. DME MAC auditors specifically look for whether the non-DEHP clinical rationale appears in the record at the time of the original order, not as a retroactive addition.

Common billing errors and denial reasons for HCPCS Code A4707

Denial patterns for A4707 cluster around three root causes: missing modifier, inadequate documentation, and wrong billing entity. Understanding these patterns helps billing teams fix the root issue rather than appealing the same denial repeatedly.

Tracking denial patterns across your HCPCS supply claims is easier when your practice management workflow captures CARC and RARC codes at the remittance stage. Patterns that repeat across multiple A4707 claims in the same billing period usually signal a systemic process gap, not a one-off error.

Related HCPCS codes to know

A4707 rarely appears in isolation. Infusion pump billing typically involves several supply and equipment codes submitted together. Understanding which codes are commonly paired with A4707 reduces the risk of missing a billable line item or inadvertently duplicating a supply code.

For billers working across multiple supply code families, the NLM Clinical Table Search API provides a free programmatic HCPCS Level II lookup useful for building internal crosswalk references. See also other procedure code references for billing workflows that span both CPT and HCPCS code sets.

How Pabau supports HCPCS billing workflows

Billing HCPCS supply codes accurately requires more than knowing the right code. It requires a clean link between clinical documentation, the written order, the dispensing record, and the claim. Practices that manage these steps in separate systems, such as a paper order log plus a standalone billing application, face higher denial rates because the documentation chain breaks somewhere along the way.

Pabau’s claims management software connects intake documentation, clinical notes, and claim generation in one workflow. Billing staff can verify that the supporting documentation for A4707 and similar HCPCS supply codes is attached before a claim leaves the system, reducing the back-and-forth between clinical and billing teams.

For practices managing EHR and billing integrations, automated workflows flag incomplete records before submission rather than after a denial.

The automated workflows in Pabau can also prompt billing staff when a HCPCS supply code requires a specific modifier, helping prevent the KX omissions and unit quantity errors that generate the most avoidable denials for A4707 claims.

Conclusion

HCPCS Code A4707 is a straightforward supply code when the documentation is right. The non-DEHP clinical rationale, the KX modifier, and the proof of delivery are the three elements that determine whether a claim pays on first submission or cycles through denials. Billing teams that build A4707-specific checklists into their DME intake process will see cleaner claim rates than those treating it as a generic supply code.

Pabau’s claims management tools help practices connect clinical documentation directly to HCPCS billing workflows, reducing the manual steps that create denial risk for supply codes like A4707. To see how it works in your billing environment, book a demo.

Continue your research

Need a structured approach to DME documentation compliance? HIPAA compliance for medical offices covers the documentation and record-keeping standards that support clean DME and supply code claims.

Exploring other procedure code references for your billing team? IVF CPT codes billing guide walks through CPT coding workflows for clinical procedures, useful context alongside HCPCS supply billing.

Looking to streamline your clinical forms and documentation workflow? Pabau digital forms replaces paper-based order and intake workflows with a structured digital process that supports claim-ready documentation.

Frequently Asked Questions