TL;DR: Cigna Healthcare modified Policy A022 (ad_a022_administrativepolicy_enteral_formula_and_supplies) for enteral formula and supplies, effective September 26, 2025. Here's what billing teams need to do before claims start hitting the floor.
This update reinforces and clarifies Cigna's enteral nutrition coverage policy under A022 — and the message is blunt: most enteral formula and supply claims will be denied unless the patient's benefit plan explicitly includes this coverage. The policy governs HCPCS codes B4149, B4150, B4152, B4153, B4158, B4159, B4160, B4161, S9432, and S9433. If your billing team submits any of these without first verifying the member's specific benefit plan language, you're set up for a claim denial.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | Cigna Healthcare |
| Policy | Enteral Formula and Supplies (A022) |
| Policy Code | ad_a022_administrativepolicy_enteral_formula_and_supplies |
| Change Type | Modified |
| Effective Date | September 26, 2025 |
| Impact Level | High |
| Specialties Affected | Gastroenterology, Nutrition Support, Home Health, DME suppliers, Pediatrics, RCM teams billing tube feeding |
| Key Action | Verify each member's benefit plan document before billing B-codes or S-codes for enteral formula or supplies |
Cigna Enteral Formula Coverage Criteria and Medical Necessity Requirements 2025
The Cigna enteral formula coverage policy under A022 is an administrative policy — not a medical necessity policy. That distinction matters. This isn't about whether tube feeding is clinically appropriate. It's about whether the member's benefit plan includes enteral formula coverage at all.
Cigna states directly: coverage for enteral nutritional formula depends on benefit plan language and may be governed by state mandates. Benefit plan language varies significantly across Cigna plans. Before you bill B4149 through B4161 or S9432 and S9433, your team must pull the applicable benefit plan document and confirm coverage is included.
If the plan excludes enteral nutritional formula — which Cigna says is the case for many plans — then the equipment and supplies used solely for enteral feeding are also excluded. That's a two-for-one denial risk. The formula itself isn't covered, and the administration supplies aren't covered either.
For conditions that might qualify under the medical benefit, Cigna points you to Medical Coverage Policy 0136, Nutritional Support. That's a separate document with its own medical necessity criteria. If your patient has a qualifying diagnosis and you believe there's a path to coverage, Medical Coverage Policy 0136 is where the clinical coverage criteria live — not A022. Policy A022 is the administrative gate. Policy 0136 is the clinical one.
Prior authorization requirements under this policy vary by plan. Because coverage is plan-specific, prior auth rules will differ across Cigna's book of business. Check the specific plan before assuming prior auth applies — or doesn't.
Cigna Enteral Formula Exclusions and Non-Covered Indications
This is where A022 gets specific, and where billing teams run into trouble. Cigna's exclusion list is long. When enteral nutritional formula is excluded from a benefit plan, none of the following are covered or reimbursable:
Infant Formula Conditions: Standardized or specialized infant formula for food allergies, multiple protein intolerances, lactose intolerances, gluten-sensitive enteropathy or celiac disease, milk allergies, sensitivities to intact protein, protein or fat maldigestion, intolerances to soy formulas or protein hydrolysates, prematurity, and low birthweight are all excluded under plans without explicit enteral coverage.
This is a significant exposure point for pediatric billing teams. Families often assume formula for a medically fragile infant is covered. Under many Cigna plans, it isn't — even for premature infants or infants with documented food allergies.
Dietary and General Nutrition Products: Baby food, normal grocery items, high protein powders and mixes, lactose-free products, products to aid lactose digestion, low carbohydrate diet products, grocery items that can be blenderized for enteral use, oral vitamins and minerals, oral/enteral formula used to replace fluids and electrolytes, and weight-loss foods and formulas are all excluded.
The blenderized food exclusion is worth flagging. Some patients on enteral feeding use blenderized whole foods via tube. S9432 and S9433 are sometimes submitted for these cases. Under plans that exclude enteral formula, those claims won't hold.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Tube feeding (enteral nutrition) via stomach or small intestine | Plan-dependent | B4149, B4150, B4152, B4153, B4158–B4161 | Covered only when benefit plan explicitly includes enteral formula coverage |
| Pediatric enteral formula — intact nutrients | Plan-dependent | B4158, B4159, B4160 | Excluded under plans without enteral benefit; includes soy-based and calorically dense formulas |
| Pediatric enteral formula — hydrolyzed/amino acid-based | Plan-dependent | B4161 | Excluded even for documented protein intolerances when plan excludes enteral coverage |
| Blenderized natural foods for tube feeding | Not covered (under exclusion plans) | B4149 | Grocery-origin blenderized foods excluded when plan excludes enteral formula |
| Medical foods — non-inborn errors of metabolism | Plan-dependent | S9432 | Excluded when enteral formula benefit is not present |
| Nutritionally complete oral formula (100% nutritional intake) | Plan-dependent | S9433 | Subject to same plan exclusion; check benefit language |
| Specialized infant formula (allergies, prematurity, low birthweight) | Not covered (under exclusion plans) | B4158, B4161 | No carve-out for prematurity or medically necessary infant formula when plan excludes enteral benefit |
| Weight-loss foods and formula | Not covered | — | Explicitly excluded regardless of plan |
| Oral vitamins and minerals | Not covered | — | Explicitly excluded |
| High protein powders and mixes | Not covered | — | Explicitly excluded |
| Grocery items (regular food, baby food) | Not covered | — | Explicitly excluded; blenderized grocery items included in exclusion |
| Lactose-free products | Not covered (under exclusion plans) | — | Excluded even when medically indicated |
| Low carbohydrate diet products | Not covered | — | Explicitly excluded |
| Fluid and electrolyte replacement formulas (oral/enteral) | Not covered | — | Explicitly excluded |
Cigna Enteral Formula Billing Guidelines and Action Items 2025
Here's what your team needs to do before billing under this policy. The effective date of September 26, 2025 means these processes need to be in place now.
| # | Action Item |
|---|---|
| 1 | Pull the benefit plan document for every Cigna enteral formula claim. Don't assume coverage. The policy explicitly states that benefit language differs significantly across Cigna plans. Your pre-authorization or eligibility check is not enough — you need the specific benefit plan document that confirms enteral formula is included. If you can't confirm it, the claim is at risk. |
| 2 | Flag pediatric accounts for immediate review. Pediatric billing carries the highest exposure under this policy. Formulas coded as B4158, B4159, B4160, and B4161 — covering conditions like prematurity, low birthweight, protein intolerances, and food allergies — are explicitly excluded under plans without an enteral benefit. Talk to your medical director or compliance officer if you have a high volume of pediatric formula claims and you're unsure how your Cigna plan mix applies. |
| 3 | Separate A022 denials from Policy 0136 appeals. If you receive a denial under A022 and believe the patient qualifies under the medical benefit, route the appeal to Medical Coverage Policy 0136 (Nutritional Support). A022 is administrative. Policy 0136 is where medical necessity criteria for nutritional support live. Mixing the two will slow your appeals and reduce your success rate. |
| 4 | Audit your charge capture for B4149 and S9432 claims involving blenderized or whole foods. Blenderized natural foods submitted under B4149, and medical foods under S9432, are explicitly excluded when the plan lacks enteral formula coverage. If your practice or facility supports blenderized diet tube feeding, this is a high-volume denial risk. Run a lookback on claims submitted after September 26, 2025 to catch any that went through without benefit verification. |
| 5 | Check state mandate applicability. Cigna notes that state mandates may govern coverage. Some states require coverage for enteral formula even when the plan would otherwise exclude it. Your compliance officer should confirm which states apply to your patient population. This is especially relevant for Cigna plans sold in states with metabolic disorder mandates or pediatric nutrition mandates. |
| 6 | Remove assumptions about prior authorization from your workflow. Because coverage depends entirely on the member's plan, prior auth requirements are also plan-specific. Don't apply a blanket prior auth process across all Cigna enteral claims. Verify auth requirements at the plan level for each claim. Submitting without required prior auth on a plan that does cover enteral formula is a preventable denial. |
| 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 Enteral Formula Under ad_a022_administrativepolicy_enteral_formula_and_supplies
HCPCS Codes — Plan-Dependent Coverage
All ten HCPCS codes below fall under Cigna's A022 administrative policy. Coverage depends entirely on the member's benefit plan. No code in this list is automatically covered.
| Code | Type | Description |
|---|---|---|
| B4149 | HCPCS | Enteral formula, manufactured blenderized natural foods with intact nutrients, includes proteins, fats, carbohydrates, vitamins, and minerals — per 100 calories |
| B4150 | HCPCS | Enteral formula, nutritionally complete with intact nutrients, includes proteins, fats, carbohydrates, vitamins, and minerals — per 100 calories |
| B4152 | HCPCS | Enteral formula, nutritionally complete, calorically dense (≥1.5 Kcal/ml) with intact nutrients — per 100 calories |
| B4153 | HCPCS | Enteral formula, nutritionally complete, hydrolyzed proteins (amino acids and peptide chain) — per 100 calories |
| B4158 | HCPCS | Enteral formula, for pediatrics, nutritionally complete with intact nutrients, includes proteins, fats, carbohydrates, vitamins, and minerals — per 100 calories |
| B4159 | HCPCS | Enteral formula, for pediatrics, nutritionally complete soy based with intact nutrients — per 100 calories |
| B4160 | HCPCS | Enteral formula, for pediatrics, nutritionally complete calorically dense (≥0.7 Kcal/ml) with intact nutrients — per 100 calories |
| B4161 | HCPCS | Enteral formula, for pediatrics, hydrolyzed/amino acids and peptide chain proteins — per 100 calories |
| S9432 | HCPCS | Medical foods for non-inborn errors of metabolism |
| S9433 | HCPCS | Medical food, nutritionally complete, administered orally, providing 100% of nutritional intake |
Not Covered When Plan Excludes Enteral Formula
| Code | Type | Description | Reason |
|---|---|---|---|
| B4149 | HCPCS | Blenderized natural foods formula | Grocery-based blenderized items explicitly excluded |
| B4158 | HCPCS | Pediatric formula — intact nutrients | Excluded under plans without enteral benefit; no exception for prematurity or low birthweight |
| B4159 | HCPCS | Pediatric soy-based formula | Soy formula intolerances listed as excluded condition |
| B4161 | HCPCS | Pediatric hydrolyzed/amino acid formula | Excluded even for documented protein maldigestion or food allergies |
| S9432 | HCPCS | Medical foods — non-inborn errors of metabolism | Excluded under plans without enteral formula benefit |
| S9433 | HCPCS | Nutritionally complete oral formula | Oral formula excluded alongside enteral formula under exclusion plans |
Note: No ICD-10-CM codes are listed in the A022 policy data. Clinical diagnosis codes for enteral nutrition support appear in Medical Coverage Policy 0136, which governs the medical necessity pathway.
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