Require inpatient NICU admission when SI or IS met

Inpatient NICU admission is required when the infant meets at least one Severity of Illness (e.g., gestational age <28 completed weeks OR birth weight <1000 grams, requires NRP intervention, surfactant deficiency, thermoregulatory instability, apnea of prematurity, inability to coordinate feeds, or high-risk for IVH/NEC/PDA/ROP/BPD/sepsis) or at least one Intensity of Service (e.g., mechanical ventilation including HFOV, nasal CPAP/HFNC from delivery, surfactant within 2 hours, UAC/UVC/PICC, TPN within 24 hours, continuous cardiorespiratory monitoring, thermoregulated isolette, NICU Level III minimum) item.

• Must meet ≥1 Severity of Illness OR ≥1 Intensity of Service item as listed in the policy
• Automated approvals may be allowed but all denials require licensed clinician review (policy operational note in source)

Use specified revenue and pharmacy/drug codes when billing

Include appropriate UB‑04 revenue codes and pharmacy/drug revenue codes on claims: use NICU revenue 0173‑0174, pharmacy 0250 for surfactant/TPN/medications, and drug detail code 0636 for high‑cost drugs (surfactant). Also include respiratory (0410) and laboratory (0300) revenue codes as applicable.

• NICU revenue codes: 0173‑0174
• Pharmacy revenue: 0250; Drug detail: 0636 (surfactant)
• Respiratory revenue: 0410; Lab revenue: 0300

Therapeutic hypothermia: start within 6 hours at Level III‑IV with continuous aEEG

Therapeutic hypothermia (cooling) must be performed at a facility with NICU Level III‑IV capability and initiated within 6 hours of birth; continuous aEEG monitoring is required throughout cooling and rewarming (continuous EEG/aEEG revenue 0920) and NICU/high‑acuity revenue codes (0173‑0174) should be applied.

• Initiate cooling within 6 hours; target core temp 33.5°C ×72 hours per protocol
• NICU Level III‑IV with hypothermia protocol required; continuous aEEG (Rev 0920) for monitoring

Include surgical ICD‑10‑PCS and OR/iNO revenue codes for NEC and high‑cost therapies

When NEC requires surgical intervention, map procedures to ICD‑10‑PCS (e.g., 0DT60ZZ resection small intestine, 0DT80ZZ resection large intestine) and include operating room and procedure revenue codes (e.g., OR 0360) and iNO/respiratory delivery revenue codes (0410) where used.

• ICD‑10‑PCS for resections: 0DT60ZZ, 0DT80ZZ
• OR revenue code: 0360; Respiratory/iNO delivery: 0410; Pharmacy: 0250 for antibiotics/TPN

Report cardiac surgical CPT and DRG codes for authorization

Include congenital cardiac surgical procedure and DRG codes in authorization workflows for neonatal cardiac surgery (examples: Norwood CPT 33924; arterial‑switch/shunt range CPT 33770‑33783) and associated DRGs (DRG 820‑822) when submitting claims or seeking authorization.

• CPT examples: 33924 (Norwood); 33770‑33783 (arterial‑switch/shunts)
• MS‑DRG: 820, 821, 822; include OR (0360), Cath Lab (0481), Cardiac ICU revenue codes as applicable

Include mapped procedure CPTs and DRGs for authorization reviews

Reference the specific procedure and DRG mappings when requesting authorization: examples include PDA ligation (CPT 33820/33822), transcatheter PDA closure (CPT 93582), VP shunt procedures (CPT 62220/62223) and their mapped DRGs/revenue codes to support utilization review.

• PDA ligation: CPT 33820 / 33822; transcatheter closure: CPT 93582
• VP shunt: CPT 62220 / 62223; map to corresponding DRGs and revenue codes for prior authorization

Report procedure CPTs with DRG/revenue crosswalks

Map procedures to DRGs and include corresponding revenue codes on claims to support utilization review; examples: PDA ligation and transcatheter closure (CPTs noted) and VP shunt procedures are mapped to surgical DRGs and operative revenue codes.

• Ensure CPTs (e.g., 33820/33822, 93582, 62220/62223) are reported with appropriate DRG and OR/cath lab revenue codes
• Such mappings may trigger procedural authorization per plan rules

Apply revenue and DRG crosswalks for utilization review (EEG, MRI, pharmacy)

Use continuous EEG/aEEG revenue code 0920, NICU revenue codes (0173‑0174), pharmacy (0250) and imaging revenue codes (0610 MRI) when billing for utilization‑reviewed services such as continuous EEG monitoring, MRI brain, and drug therapies.

• Continuous EEG/aEEG: Rev 0920; NICU Rev 0173‑0174
• Pharmacy Rev 0250 for anticonvulsants/surfactant; MRI Rev 0610

Use MS‑DRG and revenue crosswalks for VLBW/moderate preterm claims

Align claims for VLBW/moderate preterm admissions with the policy’s MS‑DRG and revenue code crosswalks (e.g., DRG 791/792/794 and revenue 0172/0173) when submitting inpatient claims to avoid coding mismatches.

• Use DRGs listed for prematurity (e.g., DRG 791, 792) and Level II/III revenue codes (Rev 0172/0173)
• Ensure diagnosis codes and claimed level of care match documented clinical SI/IS criteria

Follow documented clinical progression and surfactant/feeding timing

Clinical management should follow the expected progression: ventilator weaning trajectory HFOV → conventional → CPAP → HFNC → room air, administer surfactant early (may require 2–3 doses in first 72 hours), initiate TPN within 24 hours and trophic feeds at 24–48 hours.

• Ventilator weaning sequence as specified (HFOV → conventional → CPAP → HFNC → room air)
• Surfactant dosing may require 2–3 doses in first 72 hours; start TPN within 24 hours; begin trophic feeds 24–48 hours

Obtain blood culture before antibiotics and start recommended empiric regimen

For suspected neonatal sepsis obtain a blood culture before starting antibiotics and initiate empiric IV antibiotics: early‑onset sepsis (EOS) = ampicillin + gentamicin; late‑onset sepsis (LOS) = vancomycin + gentamicin or cefepime.

• Obtain blood culture prior to antibiotics (minimum 1 mL pediatric bottle)
• Start IV antibiotics within 1 hour: EOS — ampicillin + gentamicin; LOS — vancomycin + gentamicin or cefepime

Follow staged NEC management and obtain surgical consult for Stage II–III

Manage NEC per Modified Bell staging: Stage II — NPO with bowel rest and IV antibiotics; Stage III — escalate toward surgery. A surgical consult is required for all Stage II and III cases and emergent surgery for perforation or clinical deterioration.

• Stage II: bowel rest (≈7 days), NG/OG low intermittent suction, IV antibiotics (ampicillin + gentamicin + metronidazole) and TPN
• Stage III: surgical consultation mandatory; emergent surgery for pneumoperitoneum, fixed dilated loop, or abdominal wall crepitus

Use specified NEC antibiotic regimen and bowel‑rest durations

When treating NEC with antibiotics, use the policy‑specified regimen: ampicillin + gentamicin + metronidazole for 7–14 days per stage, with bowel rest durations per stage and TPN support during bowel rest.

• Antibiotic regimen: ampicillin + gentamicin + metronidazole for 7–14 days (stage dependent)
• Stage II bowel rest ~7 days; Stage III bowel rest 10–14 days; provide TPN via central line during bowel rest

Sequence NAS/NOWS care: non‑pharmacologic then specified pharmacologic dosing

For NAS/NOWS prioritize non‑pharmacologic measures first (rooming‑in, low stimulation, skin‑to‑skin, breastfeeding if eligible); initiate pharmacologic therapy per policy dosing when indicated (morphine 0.04–0.08 mg/kg PO q3–4h or methadone 0.05–0.1 mg/kg PO q6h).

• Non‑pharmacologic first-line: rooming‑in, low stimulation, skin‑to‑skin, swaddling, breastfeeding if eligible
• Pharmacologic options/dosing: morphine 0.04–0.08 mg/kg PO q3–4h; methadone 0.05–0.1 mg/kg PO q6h

Trial pharmacologic PDA closure per dosing before ligation when appropriate

Attempt pharmacologic closure of hemodynamically significant PDA before surgical ligation when appropriate: use indomethacin (0.2 mg/kg IV q12‑24h ×3), ibuprofen lysine (10 mg/kg then 5 mg/kg ×2), or IV acetaminophen (15 mg/kg q6h ×3–7 days) per dosing in the policy.

• Document trial of indomethacin, ibuprofen lysine, or IV acetaminophen prior to surgical ligation when clinically appropriate
• Report pharmacologic therapy on claims using pharmacy revenue codes (0250)

Use phenobarbital loading first; use specified second‑line agents/doses

For neonatal seizures, first‑line IV anticonvulsant is phenobarbital with a 20 mg/kg loading dose and additional 10 mg/kg boluses up to 40 mg/kg total; second‑line options include levetiracetam (40–60 mg/kg) or fosphenytoin (20 mg/kg PE) as specified.

• Phenobarbital loading 20 mg/kg IV first‑line; may give additional 10 mg/kg boluses to a total of 40 mg/kg
• Second‑line: levetiracetam 40–60 mg/kg or fosphenytoin 20 mg/kg PE

Document anticonvulsant dosing sequence and map to pharmacy/EEG codes

Follow the documented anticonvulsant sequence: phenobarbital loading (20 mg/kg, repeat boluses up to 40 mg/kg total) as first‑line, then consider levetiracetam 40–60 mg/kg or fosphenytoin 20 mg/kg PE if seizures persist.

• Document doses and response in chart and include revenue code 0250 for anticonvulsant pharmacy charges and Rev 0920 if continuous EEG used

Align level‑of‑care placement with AAP LOC grid

Place infants at the appropriate level of care per public AAP Levels of Neonatal Care: higher‑intensity interventions (mechanical ventilation, HFOV/HFJV/iNO, vasoactives, therapeutic hypothermia, ECMO, post‑cardiac surgery, surgical NEC) require NICU Level III/IV.

• Use LOC grid: Level III/IV for mechanical ventilation, therapeutic hypothermia, ECMO, post‑cardiac surgery; Level II for CPAP/HFNC and advancing gavage feeds
• Ensure level‑of‑care on claim matches documented SI/IS criteria to avoid denial

Document trigger, evidence, and plan when goal LOS exceeded

When goal length of stay is exceeded, document the specific medical‑necessity trigger, the clinical evidence supporting it, and a targeted intervention plan to justify continued inpatient stay.

• Examples of triggers: continued respiratory support without weaning, unresolved apnea, inability to achieve full oral feeds/weight gain, newly identified comorbidity, failure of caregiver competency
• Include daily concurrent review notes and planned interventions

Document discharge readiness with specified objective milestones

Document discharge readiness with required objective evidence: sustained oral feeding ≥20–30 g/day for 3+ days, thermoregulation in open crib for 24–48 hours (axillary 36.5–37.5°C), event‑free interval of 5–7 days without significant apnea/bradycardia/desaturation, passed car‑seat test, completed screens and parental competency.

• Feeding: ≥20–30 g/day ×3+ days; thermoregulation: open crib 24–48 h; no clinically significant events for 5–7 days
• Complete hearing screen (AABR), ROP screening current, immunizations and metabolic screen, parental competencies documented

Include specific clinical evidence and daily review notes for continued stay

For continued‑stay concurrent review, include the specific medical‑necessity trigger, supporting clinical evidence, targeted intervention plan, daily review notes, culture results (36–48h), ventilator/CPAP weaning progress, and surfactant timing/doses when relevant.

• Include culture timing/results at 36–48h and plan if negative/positive
• Document ventilator wean goals (e.g., extubate when FiO2 <0.30, MAP <8) and surfactant administration timing/doses

Document all three HIE admission criteria and timing to cooling

For therapeutic hypothermia (HIE) approval document all three admission criteria: A) evidence of perinatal asphyxia (sentinel event or cord/postnatal gas pH <7.00 or BD ≥16 mEq/L), B) clinical evidence (Apgar ≤5 at 5 or 10 minutes or continued resuscitation at 10 minutes), and C) neurological exam meeting Sarnat Stage II/III or moderately/severely abnormal aEEG; also document timing to confirm cooling initiated within 6 hours.

• Cord or first postnatal gas within 60 min: pH <7.00 or BD ≥16 mEq/L (or if indeterminate pH 7.01–7.15 proceed to B and C)
• Document Apgar ≤5 at 5 or 10 minutes or ongoing resuscitation at 10 minutes; Sarnat Stage II/III or abnormal aEEG

Document Modified Bell stage elements and NEC IS interventions

For NEC admissions include Modified Bell stage findings (vital signs, abdominal exam, imaging, labs) and intensity‑of‑service interventions (NPO/bowel rest, NG/OG suction, IV antibiotics, TPN, serial abdominal XR, surgical consult) in the record.

• Record stage‑specific signs (e.g., pneumatosis on XR for Stage II, pneumoperitoneum for Stage III) and labs (platelets, pH/base deficit)
• Document IV antibiotic regimen, duration, TPN use, and timing of surgical consult

Attach labs/procedure documentation and matching revenue/DRG codes

Include supporting laboratory and procedure documentation in the chart and claim (blood cultures, CBC, CRP, CSF, serial ABG/lactate/CMP/LFTs, MRI brain when applicable) and capture applicable revenue/DRG codes with those services.

• Obtain and document blood cultures before antibiotics, serial labs per condition, and imaging (head US, MRI) as indicated
• Report corresponding revenue codes (e.g., Lab 0300, MRI 0610) on claims

When extended stay occurs, document trigger, evidence, and intervention plan

For extended stays beyond goal LOS, document one or more medical‑necessity triggers, specify the trigger, include supporting clinical evidence, and a targeted intervention plan to justify continued inpatient care.

• Triggers include continued respiratory support without wean, unresolved apnea, inability to achieve full oral feeds/weight gain, newly identified comorbidity, or caregiver‑competency failure
• Documentation must link the trigger to planned interventions and expected timeline

Adhere to specified concurrent review frequencies and document them

Concurrent review frequency requirements: q12h for Stage II–III NEC, q24h for Stage I NEC, and daily review by the neonatologist/attending for PPHN; document these reviews in the medical record.

• NEC: q12h for Stage II–III; q24h for Stage I
• PPHN: daily neonatologist review

Justify continued inpatient stay beyond goal LOS with documented triggers and plan

When goal length of stay is exceeded, continued inpatient stay requires documentation of one or more specific medical‑necessity triggers (e.g., continued respiratory support, unresolved apnea, inability to achieve full feeds/weight gain); document the trigger, evidence, and targeted intervention.

• Document the exact trigger and objective clinical evidence (e.g., ongoing FiO2/ventilator settings, event logs for apnea)
• Include a targeted intervention plan and expected reassessment timeline

Include SI evidence and IS interventions in admission documentation

Admission documentation must include evidence meeting at least one Severity of Illness criterion (e.g., head US grade III/IV, clinical seizures/status) and at least one Intensity of Service intervention (e.g., serial imaging/EEG, neurosurgical consult, IV anticonvulsant) as applicable to the condition.

• For IVH include head US findings and serial measurements; for seizures include clinical/electrographic evidence and anticonvulsant administration
• Ensure documentation supports billed diagnosis and level of care

Document daily neonatologist review and rationale for continued stay

Daily review by the neonatologist/attending must document active treatment, unmet discharge criteria, or need for services not available at a lower level of care; for extended stay document the specific medical‑necessity trigger, clinical evidence, and targeted intervention plan.

• Daily notes must state why the infant remains inpatient (active treatment or unmet criteria)
• For extended stay include specific trigger, supporting labs/imaging, and planned actions

Extended‑stay documentation must identify trigger, evidence, and plan

When goal length of stay is exceeded, documentation must identify one or more medical‑necessity triggers, include the specific trigger, clinical evidence supporting it, and a targeted intervention plan to justify continued inpatient stay.

• Examples of triggers and required evidence are listed (continued respiratory support, unresolved apnea, feeding inability, new comorbidity)
• Include planned interventions and timing for reassessment

Risk of denial: NICU stay solely for observation, weight gain, car‑seat, education, or social reasons

Denial risk exists when NICU admission or continued stay is solely for observation of a well‑appearing term or late‑preterm infant, solely for weight gain when otherwise stable, awaiting car‑seat challenge when all other criteria met, parental education only, or social/placement reasons.

• Avoid inpatient NICU billing when infant is well‑appearing with no SI indicators or is stable on room air >24 hours
• Use well‑baby nursery or outpatient settings for non‑medical reasons

Denial risk if extended stay lacks documented medical‑necessity trigger

There is a denial risk for continued inpatient stay beyond the goal LOS if the record does not document one or more medical‑necessity triggers (e.g., continued respiratory support, unresolved apnea, inability to achieve full oral feeds/weight gain, new comorbidity, caregiver competency failure).

• If goal LOS exceeded, the chart must state the trigger, supporting clinical data, and targeted interventions
• Lack of documented trigger/evidence may prompt denial of continued stay

Admission may be denied if SI/IS criteria are not met—document objective criteria

Admission to NICU may be denied if the condition does not meet the policy’s Severity or Intensity criteria (for example, mild tachypnea improving within 2 hours or a well‑appearing infant with adequate maternal GBS prophylaxis); ensure documentation maps to SI/IS criteria.

• Document objective SI or IS findings (FiO2 requirements, CPAP settings, abnormal labs, imaging) when admitting to NICU
• Well‑appearing infants with adequate maternal prophylaxis may be managed in well‑baby nursery

Cooling/therapeutic hypothermia ineligibility and denial risk if timing/GA/BW excluded

Therapeutic hypothermia may be denied if not initiated within 6 hours of birth or if the infant’s gestational age is <35 weeks or birth weight <1800 g; ensure eligibility and cooling initiation time are documented when seeking authorization.

• Cooling exclusion criteria: GA <35 weeks, BW <1800 g, age >6 hours at identification, Sarnat Stage I, major congenital anomaly incompatible with survival
• Document exact time of birth, time of identification, and time cooling started

Ensure diagnosis codes on claims match documented clinical diagnoses

Claims should align diagnosis coding with the policy’s referenced ICD‑10‑CM codes (e.g., P91.x for HIE, P77.x for NEC); mismatches between documented clinical diagnoses and submitted codes may trigger audit or denial.

• Use the ICD‑10‑CM codes listed for each condition when submitting claims
• Ensure medical record documentation supports the billed diagnosis code to avoid coding review

Risk of denial for continued NICU stay for non‑medical convenience or slow feed advancement

Continued NICU stay for non‑medical convenience or solely for slow feed advancement when infant is otherwise stable may not meet medical‑necessity criteria and can be transitioned to lower level of care; document objective reasons if remaining inpatient.

• If infant is stable on room air and gaining weight, consider transition to intermediate care rather than continued NICU billing
• Document objective barriers to discharge if continued NICU stay is necessary