ModifiedCentenePolicy CP.MP.163

Total Parenteral Nutrition and Intradialytic Parenteral Nutrition

Medical necessity criteria, coverage stance, and coding implications for total parenteral nutrition and intradialytic parenteral nutrition for members/enrollees of Centene-affiliated health plans.

Policy Summary

PayerCentene

PolicyTotal Parenteral Nutrition and Intradialytic Parenteral Nutrition

Policy CodePolicy CP.MP.163

Change TypeCriteria clarifications and terminology updates

Effective Date

Next Review Date

Key ActionObtain prior authorization and submit documentation demonstrating nutritional insufficiency and that oral/enteral nutrition is inappropriate or inadequate.

SourceLink

POLICY UPDATE CHANGES

Updated criteria I.A.1.a regarding low body weight to include details by age group and expanded to I.A.1.a through c; removed prior criteria regarding total protein and serum albumin.

Changed terminology from 'end-stage renal disease' to 'stage 5 chronic kidney disease' in IDPN criteria.

Replaced 'experimental/investigational' with 'not proven safe and effective' in section II.

3 monthsinitial approval duration

6 monthscontinued approval duration

20-70%malnutrition prevalence in dialysis pts

<3.4 g/dL

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Coverage Criteria for TPN and IDPN

Initial Therapy (TPN)

Covered when ALL of the following are met:

TPN Initial Coverage Criteria: Member/enrollee has documented nutritional insufficiency in the absence of TPN and evidence that oral or enteral nutrition is inappropriate or insufficient due to structural or functional bowel disease or a non‑functioning gastrointestinal tract; specific age‑related weight/growth thresholds apply: for adults, involuntary weight loss of 10% of usual body weight within six months or 5% within one month; for neonates, extremely low birth weight ≤1000 g; for children, weight‑for‑length, weight‑for‑height, or sex‑specific weight <10th percentile or an inadequate weight or a significant decrease in usual growth percentile.see node text

Examples of qualifying conditions include, but are not limited to: short bowel syndrome; obstructing stricture; single or multiple fistulae (enterocolic, enterovesical, or enterocutaneous); motility disorders; newborn gastrointestinal anomalies that prevent or contraindicate oral feedings (e.g., tracheoesophageal fistula, gastroschisis, omphalocele, massive intestinal atresia); infants/young children who fail to thrive due to cardiac or respiratory disease, short bowel syndrome, malabsorption, or chronic idiopathic diarrhea; prolonged paralytic ileus; radiation enteritis; acute necrotizing pancreatitis with inadequate oral intake >1 week when enteral feeds exacerbate symptoms; liver failure in children approved for transplant who fail to grow on enteral support; liver failure in adults with hepatic encephalopathy intolerant of standard amino acid/protein sources; small bowel ischemia.

Initial Therapy (IDPN)

Covered when ALL of the following are met:

IDPN Coverage Criteria: Member/enrollee has stage 5 chronic kidney disease and is undergoing hemodialysis; the member meets the TPN criteria in section A (documentation of nutritional insufficiency and conditions making oral/enteral feeding inappropriate or insufficient); and IDPN is offered as an alternative to regularly scheduled TPN or when oral supplementation and enteral nutrition are inadequate or not tolerated.see node text

Society guidance (A.S.P.E.N., ESPEN, KDOQI) supports reserving IDPN for patients incapable of meeting needs orally and who are not candidates for enteral nutrition or standard TPN; IDPN provides partial nutrient delivery (approximately 70% due to dialysate losses) and is indicated for patients who continue to lose weight or have very low serum albumin (e.g., <3.4 g/dL) despite oral supplements.

The policy identifies specific populations and situations where TPN is considered not proven safe and effective. These include members with advanced cancer documented as unresponsive to chemotherapy or radiation, children who were previously well-nourished or only mildly malnourished undergoing oncologic treatment associated with a low nutrition risk (for example, less advanced disease or less intense treatment), and members for whom liver transplantation is not feasible and whose prognosis will not change despite TPN.

Additionally, the policy specifies coverage caveats for IDPN: IDPN administered in addition to regularly scheduled TPN infusions is listed among uses not supported by the criteria and therefore is considered not proven safe and effective.

State Medicaid coverage provisions take precedence when they conflict with this clinical policy. Providers and reviewers must follow applicable state Medicaid manuals for any differing provisions.

For Medicare members, the policy requires review of applicable Medicare National Coverage Determinations (NCDs) and Local Coverage Determinations (LCDs) and Medicare Coverage Articles prior to applying this clinical policy to ensure consistency with Medicare coverage rules.

The policy states that IDPN is not proven safe and effective for members with acute kidney injury who do not have end-stage renal disease (ESRD). Such IDPN use is specifically identified as outside the supported indications.

The document also specifies that IDPN offered in addition to regularly scheduled TPN is not an accepted use under the criteria and therefore is considered not proven safe and effective.

Coding and Billing Codes

HCPCS and Home Infusion CodesHCPCS

B4164-B5200	Parenteral nutrition solutions and supplies
B9004	Parenteral nutrition infusion pump, portable
S9364	Home infusion therapy, total parenteral nutrition (TPN); administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment including standard TPN formula (lipids, specialty amino acid formulas, drugs other than in standard formula and nursing visits coded separately), per diem (do not use with home infusion codes S9365)
S9365	Home infusion therapy, total parenteral nutrition (TPN); one liter per day, per diem
S9366	Home infusion therapy, total parenteral nutrition (TPN); more than one liter but no more than two liters per day, per diem
S9367	Home infusion therapy, total parenteral nutrition (TPN); more than two liters but no more than three liters per day, per diem
S9368	Home infusion therapy, total parenteral nutrition (TPN); more than three liters per day, per diem

Pediatric low birth weight threshold — extremely low birth weight

Extremely low birth weight (neonates)1000 g

Pediatric weight-for-age criteriaWeight for length, weight for height, or sex 10th percentile or inadequate weight or significant decrease in growth percentile

Adult involuntary weight loss (for context)10% within 6 months or 5% within 1 month

Serum albumin

Serum albumin threshold (IDPN context)< 3.4 g/dL

Clinical situation notedUsed to identify dialysis patients who continue to lose weight or have very low serum albumin despite oral supplements

Provider Requirements, Prior Authorization, and Documentation

Prior Authorization

Prior Authorization Required

Prior authorization is required. Providers must obtain and follow any required prior authorization per the Health Plan and the member's contract before initiating TPN or IDPN. Initial approval durations: TPN — 3 months (continuation up to 6 months if responding without unacceptable complications); IDPN — 3 months initial, continued approval up to 6 months with documentation of response and no unacceptable complications. Refer to the Health Plan prior authorization processes for submission requirements and timelines.

Prior authorization applies to parenteral nutrition supplies and home infusion services (see HCPCS groups B4164–B5200, B9004, S9364–S9367).
Follow Health Plan-specific prior authorization portals and member contract benefit limits.

Denial Risk

Denial Triggers for Not Meeting Criteria

Requests lacking documentation that demonstrates medical necessity for parenteral nutrition may be denied. Common denial triggers include absence of adequate evidence of nutritional insufficiency without TPN (e.g., required age-specific low body weight or significant weight loss), lack of documented structural or functional bowel disease or other qualifying indications, requests for IDPN when not meeting ESRD/hemodialysis criteria, and requests for populations or situations listed as not proven safe and effective (e.g., IDPN added to regularly scheduled TPN, IDPN for acute kidney injury without ESRD, certain advanced cancer or low nutrition risk oncology cases).

Background and Clinical Context

Parenteral nutrition (PN) delivers macronutrients and micronutrients intravenously when the gastrointestinal tract cannot be used to meet a patient’s nutritional needs. Total Parenteral Nutrition (TPN) provides complete nutrition and is typically reserved for patients with structural or functional bowel failure (for example, short bowel syndrome, obstructing strictures, high-output fistulae, severe motility disorders, paralytic ileus, radiation enteritis, necrotizing enterocolitis, small bowel ischemia, or situations such as liver failure in transplant candidates). Long-term TPN often requires central venous access and carries risks including catheter-related infection, metabolic disturbances, and hepatobiliary complications.

Intradialytic Parenteral Nutrition (IDPN) is administered during hemodialysis for patients with stage 5 chronic kidney disease who cannot meet nutritional needs orally or enterally. IDPN avoids additional venous access by using the dialysis session to deliver nutrients but provides a reduced amount of nutrition relative to TPN because of dialysate and treatment-related losses; clinical guidance recommends reserving IDPN for patients who remain malnourished or continue to lose weight despite oral supplementation and who are not candidates for enteral feeding or standard TPN.

Definitions

TPN — Total Parenteral Nutrition definition

DefinitionTotal Parenteral Nutrition (TPN) is the intravenous administration of an artificially prepared solution supplying all necessary macronutrients and micronutrients when the gastrointestinal tract cannot be used.

Indications (summary)Used when enteral nutrition is incapable of meeting needs due to nonfunctioning GI tract or structural/functional bowel disease (e.g., short bowel syndrome, obstruction, fistulae, severe motility disorders, NEC).

Access considerationsShort-term via central venous catheter; long-term requires tunneled central venous catheter or implanted infusion port.

IDPN — Intradialytic Parenteral Nutrition definition

DefinitionIntradialytic Parenteral Nutrition (IDPN) is parenteral nutrition administered during hemodialysis through the patient's dialysis access as an alternative to regularly scheduled TPN for dialysis patients.