What P35 covers · when clinicians use it
ICD-10 code P35 identifies Congenital viral diseases in the U.S. ICD-10-CM clinical and billing record set. It sits within the Perinatal Period Conditions chapter (P00–P96), the section that groups related diagnoses so providers, payers, and public-health agencies report them consistently. Clinicians and medical coders apply P35 when an encounter's findings match the Congenital viral diseases description, attaching it to the patient record so downstream insurance claims, payer audits, quality reporting, and epidemiological surveillance all reference the same standardized diagnosis. The ICD-10-CM is maintained by the Centers for Medicare & Medicaid Services and the CDC's National Center for Health Statistics, with an updated official code set released each U.S. fiscal year — always verify P35 against the current CMS/CDC release and your payer's documentation guidance before final use. This page summarizes documentation context for P35 and is a coding reference, not clinical, diagnostic, or billing advice.
P35 refers to Congenital viral diseases, addressing infectious conditions acquired in utero, during delivery, or shortly after birth that critically impact neonatal health and often require urgent medical intervention.
Symptoms
- Fever, irritability, or lethargy – Early signs of neonatal infections (P36, P39)
- Umbilical redness or pus – Symptoms of omphalitis (P38)
- Rash, microcephaly, or jaundice – Findings in congenital viral infections (P35)
- Organ enlargement or anemia – Seen with congenital parasitic infections (P37)
- Respiratory distress – Can accompany severe sepsis or congenital infections
Diagnosis
Diagnosis of Congenital viral diseases involves blood cultures, cerebrospinal fluid (CSF) analysis, PCR tests for viral pathogens, TORCH screening, umbilical swab cultures for omphalitis, and imaging studies when congenital anomalies are suspected.
ICD10 Code Usage
ICD10 code P35 is essential for NICUs, infectious disease specialists, and neonatologists to document perinatal infections, guiding treatment protocols including antibiotics, antivirals, or supportive NICU care interventions.
Related Codes
- P36 – Bacterial sepsis of newborn
- P37 – Other congenital infectious and parasitic diseases
- P38 – Omphalitis of newborn
- P39 – Other infections specific to the perinatal period
FAQs
Q1: What is ICD10 code P35?
A: It refers to Congenital viral diseases, encompassing viral, bacterial, or parasitic infections impacting newborns around the time of birth.
Q2: How serious is bacterial sepsis in newborns (P36)?
A: It can be life-threatening if not diagnosed and treated promptly with antibiotics and supportive care.
Q3: What viruses cause congenital infections (P35)?
A: Common viruses include cytomegalovirus (CMV), rubella, herpes simplex virus (HSV), and Zika virus.
Q4: How is omphalitis (P38) managed?
A: Management involves intravenous antibiotics and sometimes surgical intervention if the infection spreads rapidly.
Q5: Are congenital infections preventable?
A: Some, like rubella, are preventable through maternal vaccination and appropriate prenatal care strategies.
Conclusion
ICD10 code P35 ensures that healthcare teams accurately document Congenital viral diseases, supporting early detection, treatment, and improved outcomes for newborns facing infections during the critical perinatal period.