Billable / Specific Code
ICD-10-CM P35.9 is the diagnosis code for Congenital viral disease, unspecified. This code falls under the section "Infections specific to the perinatal period" within Chapter 16 — Certain conditions originating in the perinatal period (P00-P96). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where P35.9 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, P35.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
P35.9 is the ICD-10-CM diagnosis code for "Congenital viral disease, unspecified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of P35.9 is P35 ("Congenital viral diseases"). P35.9 provides a more specific classification within this category.
P35.9 is located in Section P35-P39 — "Infections specific to the perinatal period" within Chapter 16 of the ICD-10-CM Tabular List.
Use P35.9 when the patients documented diagnosis matches "Congenital viral disease, unspecified" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Congenital viral disease, unspecified is P35.9.
Yes, P35.9 can be used as a primary diagnosis code since it is billable and specific.
P35.9 is in Chapter 16 of the ICD-10-CM Tabular List.
Yes, P35.9 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.