I00

Billable

ChapterI00–I99

Rankcategory

Official Description

Rheumatic fever without heart involvement

Metadata & Insights

•Billable/specific code (valid for reimbursement).
•Chapter 9: Diseases of the Circulatory System (I00-I99).

CH9 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
systemic connective tissue disorders (M30-M36)
transient cerebral ischemic attacks and related syndromes (G45.-)

Instructional Notes

Includes

arthritis, rheumatic, acute or subacute

Excludes1(Not coded here. Use a different code.)

rheumatic fever with heart involvement (I01.0 -I01.9)

Clinical Hierarchy

BillableHas subcodes

CH9Diseases of the circulatory system (I00-I99)

I00-I02Acute rheumatic fever (I00-I02)

I00Rheumatic fever without heart involvementBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I00:

chapterCH9

Diseases of the circulatory system (I00-I99)

View context instructions

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

Connective Tissue Disorders with MCC

Connective Tissue Disorders with CC

Connective Tissue Disorders without CC/MCC

Cross Reference

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