Aetna modified CPB 0503 for suction pumps and associated supplies, effective September 26, 2025. Here's what billing teams need to know.
Aetna, a CVS Health company, updated its suction pump coverage policy under CPB 0503 in Aetna system. The revision affects a broad range of HCPCS codes—from E0600 and E2000 for electric home suction pumps, to K0743 for portable wound suction pumps, to the full A7000–A7002 supply series. It also formally excludes six new Category III CPT codes (0870T–0875T) covering subcutaneous peritoneal ascites pump systems. If your team bills any of these codes for Aetna members, this policy shapes every prior authorization decision and medical necessity determination you'll face.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | Aetna, a CVS Health company |
| Policy | Suction Pumps — CPB 0503 |
| Policy Code | CPB 0503 |
| Change Type | Modified |
| Effective Date | September 26, 2025 |
| Impact Level | Medium |
| Specialties Affected | DME suppliers, pulmonology, gastroenterology, wound care, home health, otolaryngology |
| Key Action | Audit charge capture for E0600, E2000, K0743, and 0870T–0875T before billing Aetna claims after September 26, 2025 |
Aetna Suction Pump Coverage Criteria and Medical Necessity Requirements 2025
The core of Aetna's suction pump coverage policy is straightforward: suction pumps and their associated supplies are covered when they meet Aetna's medical necessity criteria. The policy covers three main pump categories—respiratory suction (E0600), gastric suction (E2000), and portable wound suction (K0743)—along with the supplies that go with each.
Medical necessity is the threshold question for every claim. Aetna requires that the pump and supplies be appropriate for the member's documented condition. The ICD-10-CM codes that support coverage span oral and pharyngeal malignancies (C03.0–C14.8), aphagia and dysphagia (R13.0–R13.17), gastroparesis (K31.84), hernia (K40.00–K46.9), and liver cell carcinoma (C22.0). Dysphagia and aspiration risk diagnoses are the most common triggers for respiratory suction pump coverage.
Wound suction billing under K0743 ties directly to the absorptive dressing codes—K0744, K0745, and K0746—based on wound pad size. Pad size matters for reimbursement: K0744 covers pads up to 16 square inches, K0745 covers pads over 16 square inches, and K0746 covers pads greater than 48 square inches. Bill the wrong dressing code for the wound size and you're looking at a claim denial.
The policy also covers disposable wound suction kits under A9272, which bundles the dressing, accessories, and components into a single billable unit. For respiratory suction, Aetna covers both closed-system tracheal suction catheters (A4605) and open-system catheters (A4624), plus oropharyngeal catheters (A4628), canisters (A7000 disposable, A7001 non-disposable), tubing (A7002), sterile saline/diluent (A4216, A4217), and non-sterile gloves (A4627).
Prior authorization requirements are not explicitly listed in the policy summary, but DME claims of this type historically require documentation of medical necessity before Aetna approves durable medical equipment for home use. Confirm prior auth requirements with Aetna's provider portal before submitting your first claim after September 26, 2025.
Aetna Suction Pump Exclusions and Non-Covered Indications
The most significant change in this revision is the formal exclusion of six Category III CPT codes for subcutaneous peritoneal ascites pump systems: 0870T through 0875T.
These codes cover the full lifecycle of an implanted ascites pump—implantation (0870T), pump replacement (0871T), catheter replacement (0872T), system revision (0873T), system removal (0874T), and physician programming (0875T). Aetna does not cover any of these for the indications listed in CPB 0503. This is a blanket exclusion, not a criteria-dependent determination.
The real issue here is clinical: automated subcutaneous peritoneal ascites drainage systems are a relatively new technology for managing refractory ascites, primarily in patients with liver cell carcinoma (C22.0) and other malignancies. Aetna's position is that the evidence doesn't yet support coverage. If your physicians are implanting or managing these devices for Aetna members, don't bill 0870T–0875T expecting reimbursement. You won't get it. Redirect those cases to your compliance officer to discuss documentation options and any applicable appeals process.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Respiratory suction — home use (electric) | Covered | E0600, A4605, A4624, A4628, A7000–A7002, A4216, A4217 | Medical necessity documentation required |
| Gastric suction — home use (electric) | Covered | E2000 | Gastroparesis (K31.84) and related diagnoses |
| Portable wound suction — home use | Covered | K0743, K0744, K0745, K0746, A9272 | Dressing code must match wound pad size |
| Oral and pharyngeal malignancies | Covered (supports E0600 coverage) | C03.0–C14.8 | Dysphagia/aspiration risk must be documented |
| Aphagia and dysphagia | Covered (supports E0600 coverage) | R13.0–R13.17 | Most common trigger for respiratory suction approval |
| Gastroparesis | Covered (supports E2000 coverage) | K31.84 | Gastric pump use must be medically indicated |
| Hernia diagnoses | Covered (contextual) | K40.00–K46.9 | Policy lists; clinical context determines pump type |
| Liver cell carcinoma | Covered (contextual) | C22.0 | Supports respiratory or wound suction; not ascites pump |
| Subcutaneous peritoneal ascites pump — implantation | Not Covered | 0870T | Excluded for all indications in CPB 0503 |
| Subcutaneous peritoneal ascites pump — replacement | Not Covered | 0871T | Excluded for all indications in CPB 0503 |
| Peritoneal catheter replacement | Not Covered | 0872T | Excluded for all indications in CPB 0503 |
| Ascites pump system revision | Not Covered | 0873T | Excluded for all indications in CPB 0503 |
| Ascites pump system removal | Not Covered | 0874T | Excluded for all indications in CPB 0503 |
| Ascites pump programming | Not Covered | 0875T | Excluded for all indications in CPB 0503 |
Aetna Suction Pump Billing Guidelines and Action Items 2025
| # | Action Item |
|---|---|
| 1 | Flag 0870T–0875T in your charge capture system before September 26, 2025. Add a billing edit that prevents these codes from going out on Aetna claims without a compliance review. These codes will not be reimbursed under any indication in CPB 0503. |
| 2 | Verify diagnosis codes on all suction pump claims. E0600 claims need supporting ICD-10s from the covered ranges—R13.0–R13.17 for dysphagia, C03.0–C14.8 for oral/pharyngeal malignancies, D00.0–D00.8 for carcinoma in situ. A pump claim with an unsupported diagnosis is a clean path to denial. |
| 3 | Match wound dressing codes to actual wound size. For K0743 wound pump claims, bill K0744 for pads up to 16 square inches, K0745 for 16–48 square inches, and K0746 for pads over 48 square inches. Mismatched dressing codes are a routine audit trigger under DME billing guidelines. |
| 4 | Check prior authorization status for all home pump rentals. Aetna's durable medical equipment policies frequently require prior auth for E0600 and E2000. Confirm requirements through Aetna's provider portal and document the auth number before delivering equipment. |
| 5 | Audit any open ascites pump cases involving Aetna members. If you have patients with liver cell carcinoma (C22.0) or refractory ascites who are using or being considered for subcutaneous peritoneal ascites systems, those cases need a clinical and billing review now. The effective date of September 26, 2025 means any claim submitted after that date for 0870T–0875T will be denied under this coverage policy. |
| 6 | Update your superbills and order templates. Remove 0870T–0875T from any Aetna-facing order sets or superbills that include ascites or peritoneal drainage procedures. Leaving them on creates the temptation to bill them—and the denial volume that follows. |
If your practice treats a high volume of liver cancer or cirrhosis patients and has been exploring ascites pump technology, talk to your compliance officer before the September 26 effective date. The clinical picture for these devices may be evolving, but Aetna's coverage position right now is unambiguous.
| Previous Version | Current Version |
|---|---|
| Coverage is considered experimental and investigational for all indications | Coverage is considered medically necessary when specific criteria are met |
| Prior authorization is not required | Prior authorization is required for initial treatment |
| Documentation must include clinical history | Documentation must include clinical history |
| Re-review every 24 months | Re-review every 12 months with updated clinical documentation |
CPT, HCPCS, and ICD-10 Codes for Suction Pumps Under CPB 0503
Covered HCPCS Codes (When Selection Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| A4216 | HCPCS | Sterile water, saline and/or dextrose, diluent/flush, 10 ml |
| A4217 | HCPCS | Sterile water/saline, 500 ml |
| A4605 | HCPCS | Tracheal suction catheter, closed system, each |
| A4624 | HCPCS | Tracheal suction catheter, any type other than closed system, each |
| A4628 | HCPCS | Oropharyngeal suction catheter, each |
| A4927 | HCPCS | Gloves, non-sterile, per 100 |
| A7000 | HCPCS | Canister, disposable, used with suction pump, each |
| A7001 | HCPCS | Canister, non-disposable, used with suction pump, each |
| A7002 | HCPCS | Tubing, used with suction pump, each |
| A9272 | HCPCS | Wound suction, disposable, including dressing, all accessories and components, any type, each |
| E0600 | HCPCS | Respiratory suction pump, home model, portable or stationary, electric |
| E2000 | HCPCS | Gastric suction pump, home model, portable or stationary, electric |
| K0743 | HCPCS | Suction pump, home model, portable, for use on wounds |
| K0744 | HCPCS | Absorptive wound dressing for use with suction pump, home model, portable, pad size 16 square inches or less |
| K0745 | HCPCS | Absorptive wound dressing for use with suction pump, home model, portable, pad size more than 16 square inches |
| K0746 | HCPCS | Absorptive wound dressing for use with suction pump, home model, portable, pad size greater than 48 square inches |
Not Covered — CPT Codes Excluded Under CPB 0503
| Code | Type | Description | Reason |
|---|---|---|---|
| 0870T | CPT | Implantation of subcutaneous peritoneal ascites pump system, percutaneous, including pump-pocket creation | Not covered for indications listed in CPB 0503 |
| 0871T | CPT | Replacement of a subcutaneous peritoneal ascites pump, including reconnection between pump and indwelling catheters | Not covered for indications listed in CPB 0503 |
| 0872T | CPT | Replacement of indwelling bladder and peritoneal catheters, including tunneling of catheter(s) and connection | Not covered for indications listed in CPB 0503 |
| 0873T | CPT | Revision of a subcutaneously implanted peritoneal ascites pump system, any component | Not covered for indications listed in CPB 0503 |
| 0874T | CPT | Removal of a peritoneal ascites pump system, including implanted peritoneal ascites pump and indwelling catheters | Not covered for indications listed in CPB 0503 |
| 0875T | CPT | Programming of subcutaneously implanted peritoneal ascites pump system by physician or other qualified health care professional | Not covered for indications listed in CPB 0503 |
Key ICD-10-CM Diagnosis Codes Covered Under CPB 0503
| Code | Description |
|---|---|
| C03.0–C06.9 | Malignant neoplasm of gum and oral cavity |
| C09.0–C14.8 | Malignant neoplasm of pharynx |
| C22.0 | Liver cell carcinoma |
| D00.0–D00.8 | Carcinoma in situ of lip, oral cavity, and pharynx |
| D10.0–D11.9, D13.0 | Benign neoplasm of mouth, pharynx, oral cavity, major salivary glands, and esophagus |
| J39.0–J39.2 | Other diseases of pharynx |
| K31.84 | Gastroparesis |
| K40.00–K46.9 | Hernia |
| R13.0–R13.17 | Aphagia and dysphagia |
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