ICD-10-CM Codes
I00-I99
I00-I02
I00-
2023 ICD-10-CM Diagnosis Code I00

2023 ICD-10-CM Diagnosis Code I00

Rheumatic fever without heart involvement

2016

2017

2018

2019

2020

2021

2022

2023

Billable/Specific Code

I00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM I00 became effective on October 1, 2022.
This is the American ICD-10-CM version of I00 - other international versions of ICD-10 I00 may differ.

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as I00. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

rheumatic fever with heart involvement (
ICD-10-CM Diagnosis Code I01.0
Acute rheumatic pericarditis
Applicable To
- Any condition in I00 with pericarditis
- Rheumatic pericarditis (acute)
Type 1 Excludes
- acute pericarditis not specified as rheumatic (I30.-)
I01.0
-
ICD-10-CM Diagnosis Code I01.9
Acute rheumatic heart disease, unspecified
Applicable To
- Any condition in I00 with unspecified type of heart involvement
- Rheumatic carditis, acute
- Rheumatic heart disease, active or acute
I01.9
)

Includes

Includes Help

"Includes" further defines, or give examples of, the content of the code or category.

arthritis, rheumatic, acute or subacute

The following code(s) above I00 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to I00:

I00-I99
2023 ICD-10-CM Range I00-I99
Diseases of the circulatory system
Type 2 Excludes
- 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.-)
Diseases of the circulatory system

Approximate Synonyms

Migratory polyarthritis
Rheumatic fever

ICD-10-CM I00 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

545 Connective tissue disorders with mcc
546 Connective tissue disorders with cc
547 Connective tissue disorders without cc/mcc

Convert I00 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Code annotations containing back-references to I00:

Code First: J17

ICD-10-CM Diagnosis Code J17
Pneumonia in diseases classified elsewhere
Code First
- underlying disease, such as:
- Q fever (A78)
- rheumatic fever (I00)
- schistosomiasis (B65.0-B65.9)
Type 1 Excludes
- candidial pneumonia (B37.1)
- chlamydial pneumonia (J16.0)
- gonorrheal pneumonia (A54.84)
- histoplasmosis pneumonia (B39.0-B39.2)
- measles pneumonia (B05.2)
- nocardiosis pneumonia (A43.0)
- pneumocystosis (B59)
- pneumonia due to Pneumocystis carinii (B59)
- pneumonia due to Pneumocystis jiroveci (B59)
- pneumonia in actinomycosis (A42.0)
- pneumonia in anthrax (A22.1)
- pneumonia in ascariasis (B77.81)
- pneumonia in aspergillosis (B44.0-B44.1)
- pneumonia in coccidioidomycosis (B38.0-B38.2)
- pneumonia in cytomegalovirus disease (B25.0)
- pneumonia in toxoplasmosis (B58.3)
- rubella pneumonia (B06.81)
- salmonella pneumonia (A02.22)
- spirochetal infection NEC with pneumonia (A69.8)
- tularemia pneumonia (A21.2)
- typhoid fever with pneumonia (A01.03)
- varicella pneumonia (B01.2)
- whooping cough with pneumonia (A37 with fifth-character 1)
Type 1 Excludes: M02
, M05

ICD-10-CM Diagnosis Code M02
Postinfective and reactive arthropathies
Code First
- underlying disease, such as:
- congenital syphilis [Clutton's joints] (A50.5)
- enteritis due to Yersinia enterocolitica (A04.6)
- infective endocarditis (I33.0)
- viral hepatitis (B15-B19)
Type 1 Excludes
- Behçet's disease (M35.2)
- direct infections of joint in infectious and parasitic diseases classified elsewhere (M01.-)
- postmeningococcal arthritis (A39.84)
- mumps arthritis (B26.85)
- rubella arthritis (B06.82)
- syphilis arthritis (late) (A52.77)
- rheumatic fever (I00)
- tabetic arthropathy [Charcôt's] (A52.16)
ICD-10-CM Diagnosis Code M05
Rheumatoid arthritis with rheumatoid factor
Type 1 Excludes
- rheumatic fever (I00)
- juvenile rheumatoid arthritis (M08.-)
- rheumatoid arthritis of spine (M45.-)
Applicable To: I01.0
, I01.1
, I01.2
, I01.8
, I01.9

ICD-10-CM Diagnosis Code I01.0
Acute rheumatic pericarditis
Applicable To
- Any condition in I00 with pericarditis
- Rheumatic pericarditis (acute)
Type 1 Excludes
- acute pericarditis not specified as rheumatic (I30.-)
ICD-10-CM Diagnosis Code I01.1
Acute rheumatic endocarditis
Applicable To
- Any condition in I00 with endocarditis or valvulitis
- Acute rheumatic valvulitis
ICD-10-CM Diagnosis Code I01.2
Acute rheumatic myocarditis
Applicable To
- Any condition in I00 with myocarditis
ICD-10-CM Diagnosis Code I01.8
Other acute rheumatic heart disease
Applicable To
- Any condition in I00 with other or multiple types of heart involvement
- Acute rheumatic pancarditis
ICD-10-CM Diagnosis Code I01.9
Acute rheumatic heart disease, unspecified
Applicable To
- Any condition in I00 with unspecified type of heart involvement
- Rheumatic carditis, acute
- Rheumatic heart disease, active or acute

Diagnosis Index entries containing back-references to I00:

Erythema, erythematous (infectional) (inflammation) L53.9
ICD-10-CM Diagnosis Code L53.9
Erythematous condition, unspecified
Applicable To
Erythema NOS
Erythroderma NOS
- marginatum L53.2
  ICD-10-CM Diagnosis Code L53.2
  Erythema marginatum
  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  - in I00 (due to)
Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) R50.9
ICD-10-CM Diagnosis Code R50.9
Fever, unspecified
Applicable To
Fever NOS
Fever of unknown origin [FUO]
Fever with chills
Fever with rigors
Hyperpyrexia NOS
Persistent fever
Pyrexia NOS
- rheumatic (active) (acute) (chronic) (subacute) I00
Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) J18.9
ICD-10-CM Diagnosis Code J18.9
Pneumonia, unspecified organism
- in (due to)
  - rheumatic fever I00
- rheumatic I00
Rheumatic (acute) (subacute)
- pneumonia I00

ICD-10-CM Codes Adjacent To I00

H95.53 Postprocedural seroma of ear and mastoid process following a procedure on the ear and mastoid process

H95.54 Postprocedural seroma of ear and mastoid process following other procedure

H95.8 Other intraoperative and postprocedural complications and disorders of the ear and mastoid process, not elsewhere classified

H95.81 Postprocedural stenosis of external ear canal

H95.811 Postprocedural stenosis of right external ear canal

H95.812 Postprocedural stenosis of left external ear canal

H95.813 …… bilateral

H95.819 Postprocedural stenosis of unspecified external ear canal

H95.88 Other intraoperative complications and disorders of the ear and mastoid process, not elsewhere classified

H95.89 Other postprocedural complications and disorders of the ear and mastoid process, not elsewhere classified

I00 Rheumatic fever without heart involvement

I01 Rheumatic fever with heart involvement

I01.0 Acute rheumatic pericarditis

I01.1 Acute rheumatic endocarditis

I01.2 Acute rheumatic myocarditis

I01.8 Other acute rheumatic heart disease

I01.9 Acute rheumatic heart disease, unspecified

I02 Rheumatic chorea

I02.0 Rheumatic chorea with heart involvement

I02.9 Rheumatic chorea without heart involvement

I05 Rheumatic mitral valve diseases

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2023 ICD-10-CM Diagnosis Code I00

Rheumatic fever without heart involvement

Acute rheumatic pericarditis

Acute rheumatic heart disease, unspecified

Diseases of the circulatory system

Pneumonia in diseases classified elsewhere

Postinfective and reactive arthropathies

Rheumatoid arthritis with rheumatoid factor

Acute rheumatic pericarditis

Acute rheumatic endocarditis

Acute rheumatic myocarditis

Other acute rheumatic heart disease

Acute rheumatic heart disease, unspecified

Erythematous condition, unspecified

Erythema marginatum

Fever, unspecified

Pneumonia, unspecified organism