P02.70 ICD-10-CM Code: Newborn affected by fetal inflammatory response syndrome
P02.70 maps to CMS-HCC V28 2. A source-labeled RAF reference is available. Confirm the documented diagnosis and applicable coding requirements. MEAT criteria · RAF Calculator · HCC Buddy coding tools
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FY 2026 Apr update / Certain conditions originating in the perinatal period (P00-P96) / Newborn affected by maternal factors and by complications of pregnancy, labor, and delivery (P00-P04)
P02.70
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceNewborn affected by fetal inflammatory response syndrome
A newborn is affected by fetal inflammatory response syndrome, an inflammatory condition in the fetus caused by infection or other intrauterine complications.
Buddy Insight
Fetal inflammatory response syndrome indicates significant in-utero inflammatory stress that can lead to multi-organ dysfunction and long-term developmental complications.
CMS-HCC V28
MappedHCC 2
Coefficient HCC 2: 0.500 (Community Non-Dual Aged (CNA))
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
MappedHCC 002
Code-level coefficient reference
ESRD/PACE
MappedHCC 2
Code-level coefficient reference
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Newborn affected by FIRS
Excludes 2
Official- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Inherited from P00-P96, P02
- endocrine, nutritional and metabolic diseases (E00-E88)Inherited from P00-P96, P02
- injury, poisoning and certain other consequences of external causes (S00-T88)Inherited from P00-P96, P02
- neoplasms (C00-D49)Inherited from P00-P96, P02
- tetanus neonatorum (A33)Inherited from P00-P96, P02
- encounter for observation of newborn for suspected diseases and conditions ruled out (Z05.-)Inherited from P00-P96, P02
Related Codes
Includes
Official- conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs laterInherited from P00-P96
Excludes 1
OfficialNo Excludes 1 notes are included in this display for P02.70. Check the code and parent instructions in the Code Book.
Code First
Official- any current condition in newbornInherited from P02
Use Additional
OfficialNo Use Additional Code instructions are included in this display for P02.70. Check the code and parent instructions in the Code Book.
Code Also
OfficialNo Code Also instructions are included in this display for P02.70. Check the code and parent instructions in the Code Book.
Buddy Documentation Tip
MEAT Support
Audit Caution
Common Mistakes
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is P02.70 an HCC code?
Yes. P02.70 (Newborn affected by fetal inflammatory response syndrome) maps to HCC 2, Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock under the CMS-HCC V28 risk adjustment model, with a source-labeled community non-dual aged reference coefficient of 0.500. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes. It is billable for payment year 2026.
Coder answer: P02.70 is billable and maps to V28 HCC 2, Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.
- Code
- P02.70
- Description
- Newborn affected by fetal inflammatory response syndrome
- HCC (V28)
- HCC 2 — Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock
- RAF reference coefficient
- 0.500
- Billable
- Yes
- Payment year
- 2026
HCC Category Mapping
These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.
Work P02.70 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →
MEAT review for P02.70
For P02.70, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule.
- MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
- EEvaluate: test results, medication response, or physical findings reviewed by the provider
- AAssess: explicit mention in the assessment or plan with acknowledgment of status
- TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis
Coder workflow notes
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What This Code Means
P02.70 is the ICD-10-CM diagnosis code for newborn affected by fetal inflammatory response syndrome. A newborn is affected by fetal inflammatory response syndrome, an inflammatory condition in the fetus caused by infection or other intrauterine complications. P02.70 sits in the ICD-10-CM chapter for certain conditions originating in the perinatal period (p00-p96), within the section covering newborn affected by maternal factors and by complications of pregnancy, labor, and delivery (p00-p04).
Under the CMS-HCC V28 risk adjustment model, P02.70 maps to Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock (HCC 2) with a source-labeled community, non-dual, aged reference coefficient of 0.500. For CY2026 non-PACE Medicare Advantage, CMS uses 100% of the 2024 CMS-HCC model (V28). PACE uses a separate model blend. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes.
This code indicates systemic inflammation in the fetus, often related to chorioamnionitis. For P02.70, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for P02.70 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code indicates systemic inflammation in the fetus, often related to chorioamnionitis
- •Document the underlying cause if identified (infection, maternal fever, etc.)
Clinical Significance
Fetal inflammatory response syndrome indicates significant in-utero inflammatory stress that can lead to multi-organ dysfunction and long-term developmental complications. This condition requires immediate intensive monitoring and may predict increased risk for cerebral palsy, chronic lung disease, and other serious sequelae.
Documentation Requirements
- ✓Documentation of inflammatory response syndrome in the newborn
- ✓Evidence of systemic inflammatory response (elevated white blood cell count, temperature instability)
- ✓Maternal risk factors (chorioamnionitis, prolonged rupture of membranes)
- ✓Clinical signs in the newborn (respiratory distress, hemodynamic instability)
- ✓Laboratory evidence of inflammation
- ✓Gestational age at delivery
- ✓Treatment interventions provided
Commonly Confused Codes
- •P36.9: Bacterial sepsis of newborn, unspecified (bacterial sepsis vs FIRS)
- •P28.5: Respiratory failure of newborn (respiratory failure vs systemic inflammation)
- •P02.78: Newborn affected by other conditions from chorioamnionitis (chorioamnionitis exposure vs FIRS)
- •R65.20: Severe sepsis without septic shock (severe sepsis vs FIRS)