What is ICD-10 code P10.3?

P10.3 is the ICD-10-CM diagnosis code for Subarachnoid hemorrhage due to birth injury. Bleeding in the space between the brain and its outermost membrane that results from birth injury. It belongs to the ICD-10-CM chapter for certain conditions originating in the perinatal period (p00-p96). P10.3 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. P10.3 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. P10.3 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. P10.3 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

What is the V28 vs V24 difference for P10.3?

CMS phased in the V28 risk adjustment model over payment years 2024 (33%), 2025 (67%), and 2026 (100%), replacing V24. V28 consolidates HCC categories, removes some lower-acuity conditions, and recalibrates RAF weights across the entire model. P10.3 is a payment HCC under V28 (Intracranial Hemorrhage) but was not retained as a payment HCC under V24. Both models can still appear in legacy data and in payer-specific lookback periods.

What should coders know when reporting P10.3?

Document the severity and extent of hemorrhage as this affects clinical management and prognosis Distinguish from spontaneous subarachnoid hemorrhage by confirming birth trauma as the cause Because P10.3 maps to a payment HCC, the documentation must also satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's risk adjustment score.

2026 ICD-10-CM P10.3: Subarachnoid hemorrhage due

ICD-10-CM Code View

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Code lookupP10.3Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Certain conditions originating in the perinatal period (P00-P96) / Birth trauma (P10-P15)

P10.3

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Subarachnoid hemorrhage due to birth injury

Bleeding in the space between the brain and its outermost membrane that results from birth injury.

Buddy Insight

Subarachnoid hemorrhage from birth injury indicates significant trauma during delivery that can result in neurological complications and long-term developmental issues.

CMS-HCC V28

Mapped

HCC 248

Intracranial Hemorrhage

RAF 0.239

CMS-HCC V24

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ACA/HHS

Mapped

HCC 145

HHS-HCC 145

Varies by metal level

ESRD/PACE

N/A

—

Not risk-adjusted for this model/period.

Not mapped

RXHCC

N/A

—

Not risk-adjusted for this model/period.

Not mapped

Code Book Path

Official

P10Intracranial laceration and hemorrhage due to birth injury

P10.3Subarachnoid hemorrhage due to birth injury

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for P10.3 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for P10.3 in this effective period.

Related Child Codes

Official

P10.0Subdural hemorrhage due to birth injury

P10.1Cerebral hemorrhage due to birth injury

P10.2Intraventricular hemorrhage due to birth injury

P10.4Tentorial tear due to birth injury

P10.8Other intracranial lacerations and hemorrhages due to birth injury

Includes

Official

ICD-10-CM does not list Includes notes for P10.3 in this effective period.

Excludes 1

Official

intracranial hemorrhage of newborn NOS (P52.9)
intracranial hemorrhage of newborn due to anoxia or hypoxia (P52.-)
nontraumatic intracranial hemorrhage of newborn (P52.-)

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for P10.3 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for P10.3 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for P10.3 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

Imaging studies confirming subarachnoid bleeding

Clear documentation of birth trauma as etiology

Assessment of hemorrhage extent and clinical significance

Neurological status and examination findings

MEAT Support

HCC Buddy guidance

Imaging studies confirming subarachnoid bleeding

Clear documentation of birth trauma as etiology

Assessment of hemorrhage extent and clinical significance

Neurological status and examination findings

Audit Caution

HCC Buddy guidance

Confusing location of intracranial hemorrhage (subarachnoid vs subdural)

Missing birth trauma documentation as causative factor

Failing to distinguish from spontaneous neonatal hemorrhage

Not documenting the relationship to delivery complications

Common Mistakes

HCC Buddy guidance

P10.2 — Intraventricular hemorrhage due to birth injury (different bleeding location)

I60.9 — Nontraumatic subarachnoid hemorrhage (adult condition, not birth-related)

P52.5 — Subarachnoid hemorrhage (spontaneous neonatal SAH)

P10.1 — Subdural hemorrhage due to birth injury (different hemorrhage location)

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 P10.3 an HCC code?

Yes. P10.3 (Subarachnoid hemorrhage due to birth injury) maps to Intracranial Hemorrhage under the CMS-HCC V28 risk adjustment model, with a community non-dual aged RAF of 0.239. It is billable for payment year 2026.

Coder answer: P10.3 is billable and maps to V28 HCC 248, Intracranial Hemorrhage. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.

Code: P10.3
Description: Subarachnoid hemorrhage due to birth injury
HCC (V28): HCC 248 — Intracranial Hemorrhage
RAF: 0.239
Billable: Yes
Payment year: 2026

HCC Category Mapping

V28HCC 248, Intracranial Hemorrhage

0.239

Each model's RAF is its CMS base weight for that model's standard population, so 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 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.

Work P10.3 in the Code Book — tabular path, V28 RAF, and MEAT checklist →

MEAT Criteria for P10.3

For P10.3 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 P10.3 during that encounter, not just copy-forwarded from a problem list.

Coder workflow notes

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What This Code Means

P10.3 is the ICD-10-CM diagnosis code for subarachnoid hemorrhage due to birth injury. Bleeding in the space between the brain and its outermost membrane that results from birth injury. P10.3 sits in the ICD-10-CM chapter for certain conditions originating in the perinatal period (p00-p96), within the section covering birth trauma (p10-p15).

Under the CMS-HCC V28 risk adjustment model, P10.3 maps to Intracranial Hemorrhage (HCC 248) with a community, non-dual, aged base RAF weight of 0.239. P10.3 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.

Document the severity and extent of hemorrhage as this affects clinical management and prognosis. Because P10.3 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 P10.3 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Document the severity and extent of hemorrhage as this affects clinical management and prognosis
•Distinguish from spontaneous subarachnoid hemorrhage by confirming birth trauma as the cause

Clinical Significance

Subarachnoid hemorrhage from birth injury indicates significant trauma during delivery that can result in neurological complications and long-term developmental issues. This condition requires careful monitoring for complications such as seizures and increased intracranial pressure in the neonatal period.

Documentation Requirements

✓Imaging studies confirming subarachnoid bleeding
✓Clear documentation of birth trauma as etiology
✓Assessment of hemorrhage extent and clinical significance
✓Neurological status and examination findings
✓Documentation of delivery complications or instrumental delivery
✓Monitoring for seizure activity and neurological changes
✓Exclusion of other causes of neonatal bleeding
✓Long-term neurological follow-up planning

Commonly Confused Codes

•P10.2: Intraventricular hemorrhage due to birth injury (different bleeding location)
•I60.9: Nontraumatic subarachnoid hemorrhage (adult condition, not birth-related)
•P52.5: Subarachnoid hemorrhage (spontaneous neonatal SAH)
•P10.1: Subdural hemorrhage due to birth injury (different hemorrhage location)
•P11.1: Other specified brain damage due to birth injury (non-hemorrhagic injury)