ICD-10-CM Codes
A00-B99 Certain infectious and parasitic diseases
A75-A79 Rickettsioses
A79- Other rickettsioses

2020 ICD-10-CM Diagnosis Code A79.1

Rickettsialpox due to Rickettsia akari

2016

2017

2018

2019

2020

Billable/Specific Code

A79.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2020 edition of ICD-10-CM A79.1 became effective on October 1, 2019.
This is the American ICD-10-CM version of A79.1 - other international versions of ICD-10 A79.1 may differ.

Applicable To

Kew Garden fever
Vesicular rickettsiosis

The following code(s) above A79.1 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 A79.1:

A00-B99
2020 ICD-10-CM Range A00-B99
Certain infectious and parasitic diseases
Includes
- diseases generally recognized as communicable or transmissible
Type 1 Excludes
- certain localized infections - see body system-related chapters
Type 2 Excludes
- carrier or suspected carrier of infectious disease (Z22.-)
- 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 to identify resistance to antimicrobial drugs (Z16.-)
Certain infectious and parasitic diseases

Approximate Synonyms

Rickettsial pox
Rickettsialpox

ICD-10-CM A79.1 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):

867 Other infectious and parasitic diseases diagnoses with mcc
868 Other infectious and parasitic diseases diagnoses with cc
869 Other infectious and parasitic diseases diagnoses without cc/mcc

Convert A79.1 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

Diagnosis Index entries containing back-references to A79.1:

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
- Kew Garden A79.1
Kew Garden fever A79.1
Rickettsialpox A79.1 (Rickettsia akari)
Rickettsiosis A79.9
ICD-10-CM Diagnosis Code A79.9
Rickettsiosis, unspecified
Applicable To
Rickettsial infection NOS
- due to
  - Rickettsia akari A79.1 (rickettsialpox)
- vesicular A79.1

ICD-10-CM Codes Adjacent To A79.1

A77.3 Spotted fever due to Rickettsia australis

A77.4 Ehrlichiosis

A77.40 …… unspecified

A77.41 …… chafeensis [E. chafeensis]

A77.49 Other ehrlichiosis

A77.8 Other spotted fevers

A77.9 Spotted fever, unspecified

A78 Q fever

A79 Other rickettsioses

A79.0 Trench fever

A79.1 Rickettsialpox due to Rickettsia akari

A79.8 Other specified rickettsioses

A79.81 Rickettsiosis due to Ehrlichia sennetsu

A79.89 Other specified rickettsioses

A79.9 Rickettsiosis, unspecified

A80 Acute poliomyelitis

A80.0 Acute paralytic poliomyelitis, vaccine-associated

A80.1 Acute paralytic poliomyelitis, wild virus, imported

A80.2 Acute paralytic poliomyelitis, wild virus, indigenous

A80.3 Acute paralytic poliomyelitis, other and unspecified

A80.30 Acute paralytic poliomyelitis, unspecified

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

2020 ICD-10-CM Diagnosis Code A79.1

Rickettsialpox due to Rickettsia akari

Certain infectious and parasitic diseases

Fever, unspecified

Rickettsiosis, unspecified