Non-Billable / Non-Specific Code
ICD-10-CM J03.9 is the diagnosis code for Acute tonsillitis, unspecified. This code falls under the section "Acute upper respiratory infections" within Chapter 10 — Diseases of the respiratory system (J00-J99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as J03.9. They are mutually exclusive:
Understanding where J03.9 sits in the ICD-10-CM classification helps ensure proper coding:
No, J03.9 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
J03.9 is the ICD-10-CM diagnosis code for "Acute tonsillitis, unspecified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of J03.9 is J03 ("Acute tonsillitis"). J03.9 provides a more specific classification within this category.
J03.9 is located in Section J00-J06 — "Acute upper respiratory infections" within Chapter 10 of the ICD-10-CM Tabular List.
J03.9 has 2 sub-code(s) that provide more specific detail: J03.90, J03.91.
Use J03.9 when the patients documented diagnosis matches "Acute tonsillitis, 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 Acute tonsillitis, unspecified is J03.9.
No, J03.9 is non-billable. Use a more specific sub-code for primary diagnosis billing.
J03.9 is in Chapter 10 of the ICD-10-CM Tabular List.
Type 1 Excludes for J03.9 include: influenza virus with other respiratory manifestations (J09.X2, J10.1, J11.1).
Yes, J03.9 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.