2026 ICD-10-CM Diagnosis Code P35.3Congenital viral hepatitis

ICD-10-CM Codes›P00–P96›P35-P39›P35

ICD-10-CM P35.3
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P35.3 is a billable ICD-10-CM diagnosis code for congenital viral hepatitis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as congenital hepatitis A infection. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Hepatitis and Perinatal infections.

Code Identity

ICD-10-CM Code
P35.3
Billable Status
Yes — Valid for Submission
Code Describes
Congenital viral hepatitis
Short Description
Congenital viral hepatitis
Same as the full description in the CMS dataset.
Parent Code
P35
Congenital viral diseases

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP35-P39Infections specific to the perinatal period
CategoryP35Congenital viral diseases
This CodeP35.3Congenital viral hepatitis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Congenital hepatitis A infection
  • Congenital hepatitis C infection
  • Congenital viral hepatitis
  • Congenital viral hepatitis B infection
  • Perinatal disorders of liver and/or biliary system
  • Perinatal hepatitis
  • Perinatal hepatitis B
  • Perinatal hepatitis C

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Hepatitis
      • viral, virus
        • congenital
    • Infection, infected, infective(opportunistic)
      • congenital
        • hepatitis, viral

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INF007
Hepatitis
Default principal diagnosis: inpatient No · outpatient No
CCSR PNL009
Perinatal infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Hepatitis

Hepatitis is inflammation of the liver. Inflammation is swelling that happens when tissues of the body are injured or infected. It can damage your liver. This swelling and damage can affect how well your liver functions.

The full article covers:

  • What is hepatitis?
  • What causes hepatitis?
  • How is viral hepatitis spread?
  • Who is at risk for hepatitis?
  • What are the symptoms of hepatitis?
  • What other problems can hepatitis cause?
  • How is hepatitis diagnosed?
  • What are the treatments for hepatitis?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert P35.3 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
771.2 Congenital infec NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About P35.3Overview

Is P35.3 (Congenital viral diseases) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report congenital viral hepatitis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of P35.3?

Under the General Equivalence Mappings, congenital viral hepatitis converts to ICD-9-CM 771.2 (congenital infec NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.