I01 — Rheumatic fever with heart involvement
Is I01 billable?
No — I01 is a non-billable header code. I01 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 5 billable codes beneath I01.
I01 at a glance
| Code | I01 |
|---|---|
| Description | Rheumatic fever with heart involvement |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is I01 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to I01. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Fever › rheumatic › active with heart involvement (inanition) (of unknown origin) (persistent) (with chills) (with rigor)
Excludes1 — never code together
The conditions below can never be reported together with I01 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- chronic diseases of rheumatic origin (I05-I09) unless rheumatic fever is also present or there is evidence of reactivation or activity of the rheumatic process.
Excludes2 — not included here — inherited from Chapter 9
The conditions below are not part of I01, but a patient may have both at the same time. When documentation supports it, I01 and the excluded code may both be reported.
- 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.-)
What codes fall under I01? (5)
How long has I01 existed?
I01 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with I01?
ICD-10-CM declares these codes mutually exclusive with I01 — exactly one of each pair can be correct for a given encounter.