Billable / Specific Code
ICD-10-CM I00 is the diagnosis code for Rheumatic fever without heart involvement. This code falls under the section "Acute rheumatic fever" within Chapter 9 — Diseases of the circulatory system (I00-I99). 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.
The following conditions should never be coded at the same time as I00. They are mutually exclusive:
Understanding where I00 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, I00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
I00 is the ICD-10-CM diagnosis code for "Rheumatic fever without heart involvement". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
I00 is located in Section I00-I02 — "Acute rheumatic fever" within Chapter 9 of the ICD-10-CM Tabular List.
Use I00 when the patients documented diagnosis matches "Rheumatic fever without heart involvement" 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 Rheumatic fever without heart involvement is I00.
Yes, I00 can be used as a primary diagnosis code since it is billable and specific.
I00 is in Chapter 9 of the ICD-10-CM Tabular List.
Type 1 Excludes for I00 include: rheumatic fever with heart involvement (I01.0 -I01.9).
Yes, I00 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.