2027 ICD-10-CM Diagnosis Code P12.2Epicranial subaponeurotic hemorrhage due to birth injury
ICD-10-CM Codes›P00–P96›P10-P15›P12
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Risk Adjusts — HCC 399
- Not Chronic
P12.2 is a billable ICD-10-CM diagnosis code for epicranial subaponeurotic hemorrhage due to birth injury. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 791, 793. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 40 closely related codes. Coders also document this condition as epicranial subaponeurotic hematoma. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Birth trauma.
For Medicare Advantage risk adjustment, P12.2 maps to CMS-HCC Category 399 (Major Head Injury without Loss of Consciousness) under the V28 model, adding a risk factor of about 0.199 for a community, non-dual, aged beneficiary in payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
P12.2 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2027.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Epicranial subaponeurotic hematoma
- Massive epicranial subaponeurotic hematoma due to birth trauma
- Massive subgaleal hemorrhage due to birth trauma
- Perinatal cardiovascular disorders
- Subgaleal epicranial subaponeurotic hemorrhage due to birth injury
- Subgaleal hemorrhage
- Traumatic injury of blood vessel of head
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to P12.2: its own notes plus those printed at Chapter 16. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs later
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Subgaleal hemorrhage
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Notes
General instructions on how these codes are used.
- Codes from this chapter are for use on newborn records only, never on maternal records
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name P12.2, its category, or a range that includes it.
Excludes2 1
These codes carry an Excludes2 note naming P12.2: its condition is not part of those codes, and both may be reported when the patient has both.
- Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Childbirth Problems
Childbirth is the process of giving birth to a baby. It includes labor and delivery. Usually everything goes well, but problems can happen. They may cause a risk to the mother, baby, or both. Some of the more common childbirth problems include:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert P12.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About P12.2Overview
What is the ICD-10 code for epicranial subaponeurotic hemorrhage due to birth injury?
The ICD-10-CM code for epicranial subaponeurotic hemorrhage due to birth injury is P12.2 (sometimes written as P122). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is P12.2 (Birth injury to scalp) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report epicranial subaponeurotic hemorrhage due to birth injury on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does P12.2 group to?
When epicranial subaponeurotic hemorrhage due to birth injury is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, with relative weights from 4.1073 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.
Is P12.2 a CC or MCC?
CMS lists P12.2 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 40 closely related codes in its exclusion list.
What is the ICD-9 equivalent of P12.2?
Under the General Equivalence Mappings, epicranial subaponeurotic hemorrhage due to birth injury converts to ICD-9-CM 767.11 (epicranial subapo hemorr). The mapping is a direct match.
What HCC is P12.2?
P12.2 (epicranial subaponeurotic hemorrhage due to birth injury) maps to CMS-HCC Category 399 (Major Head Injury without Loss of Consciousness), commonly written as HCC 399, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. It does not map to any RxHCC in the Part D prescription drug model.
Does P12.2 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, P12.2 adds a risk adjustment factor of about 0.199 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.052 to 0.349 depending on the payment segment). A more severe related category (HCC 397 and HCC 398) supersedes it when both are reported. See the full factor table on the HCC 399 category page.
