2027 ICD-10-CM Diagnosis Code A01.02Typhoid fever with heart involvement
ICD-10-CM Codes›A00–B99›A00-A09›A01
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
A01.02 is a billable ICD-10-CM diagnosis code for typhoid fever with heart involvement. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 867 through 869. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 11 closely related codes. Coders also document this condition as cardiac disorder due to typhoid fever. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Bacterial infections.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Cardiac disorder due to typhoid fever
- Endocarditis - typhoid
- Infection of heart caused by Salmonella enterica enterica serovar Typhi
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to A01.02: its own notes plus those printed at Chapter 1. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- diseases generally recognized as communicable or transmissible
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Typhoid endocarditis
- Typhoid myocarditis
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code to identify resistance to antimicrobial drugs (Z16.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name A01.02, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming A01.02: they are not reported together with it, unless the two conditions are unrelated.
- I39 Endocarditis and heart valve disorders in diseases classified elsewheretyphoid fever (A01.02)
Excludes2 2
These codes carry an Excludes2 note naming A01.02: its condition is not part of those codes, and both may be reported when the patient has both.
- Block P35-P39 Infections specific to the perinatal period
- P37 Other congenital infectious and parasitic diseases
Code First 1
These codes say to code first a condition named in the note, and A01.02 is one of the conditions named.
- M49 Spondylopathies in diseases classified elsewhere
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular) I38
typhoid (fever) A01.02
typhoid A01.02
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Typhoid Fever
an acute systemic febrile infection caused by salmonella typhi, a serotype of salmonella enterica.
Patient EducationClinical
Heart Diseases
Heart disease is a general term that includes many types of heart problems. It's a type of cardiovascular disease, which means heart and blood vessel disease.
The full article covers:
- What is heart disease?
- What are the types of heart disease?
- What causes heart diseases?
- Who is more likely to develop heart diseases?
- What are the symptoms of heart disease?
- How are heart diseases diagnosed?
- What are the treatments for heart disease?
- Can heart diseases be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert A01.02 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About A01.02Overview
What is the ICD-10 code for typhoid fever with heart involvement?
The ICD-10-CM code for typhoid fever with heart involvement is A01.02 (sometimes written as A0102). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is A01.02 (Typhoid fever) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report typhoid fever with heart involvement on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does A01.02 group to?
When typhoid fever with heart involvement is the principal diagnosis on an inpatient stay, it groups to MS-DRG 867, 869, 868, with relative weights from 0.6784 to 2.1855 depending on complications. Higher weights mean higher Medicare reimbursement.
Is A01.02 a CC or MCC?
CMS lists A01.02 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 11 closely related codes in its exclusion list.
What is the ICD-9 equivalent of A01.02?
Under the General Equivalence Mappings, typhoid fever with heart involvement converts to ICD-9-CM 002.0 (typhoid fever). The mapping is approximate, so confirm the match fits the documentation.
