P52.22
BillableIntraventricular (nontraumatic) hemorrhage, grade 4, of newborn
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is P52.22 an HCC code?
Yes. P52.22 maps to Cerebral Hemorrhage under the CMS-HCC V28 risk adjustment model.
HCC Category Mapping
RAF weights shown are the community, non-dual, aged base weights from the CMS risk adjustment model file. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.
MEAT Criteria for P52.22
For P52.22 to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically — it has to be re-documented and supported each calendar year.
- 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
Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed P52.22 during that encounter — not just copy-forwarded from a problem list.
What This Code Means
P52.22 is the ICD-10-CM diagnosis code for intraventricular (nontraumatic) hemorrhage, grade 4, of newborn. Severe bleeding inside the brain ventricles (fluid-filled spaces) in a newborn, classified as the most severe grade (grade 4), occurring without trauma. P52.22 sits in the ICD-10-CM chapter for certain conditions originating in the perinatal period (p00-p96), within the section covering hemorrhagic and hematological disorders of newborn (p50-p61).
Under the CMS-HCC V28 risk adjustment model, P52.22 maps to Cerebral Hemorrhage (HCC 248) with a community, non-dual, aged base RAF weight of 0.289. P52.22 was not retained as a payment HCC under the older V24 model, so V28 introduced or recategorized it during the 2024–2026 phase-in. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition.
Grade 4 represents the most severe intraventricular hemorrhage with ventricular dilation; ensure the grade is documented in the medical record before coding. Because P52.22 maps to a payment HCC, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's Medicare Advantage risk adjustment score. 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, RAF weights, and MEAT documentation criteria for P52.22 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Grade 4 represents the most severe intraventricular hemorrhage with ventricular dilation; ensure the grade is documented in the medical record before coding
- •This code is specific to nontraumatic hemorrhage; if trauma is involved, use a different code category
Clinical Significance
Grade 4 intraventricular hemorrhage represents the most severe form of neonatal brain bleeding, extending into brain parenchyma with significant tissue destruction. This condition carries extremely high risk for severe neurodevelopmental impairment, cerebral palsy, and death, requiring intensive neurological care and often leading to lifelong disabilities requiring comprehensive support services.
Documentation Requirements
- ✓Head ultrasound or MRI confirming Grade 4 IVH
- ✓Evidence of parenchymal hemorrhagic infarction
- ✓Gestational age and birth weight
- ✓Extent of brain tissue involvement
- ✓Associated ventricular dilatation
- ✓Neurological examination findings
- ✓Neurosurgical evaluation
- ✓Prognosis and care planning documentation