ICD-10 Code
International Classification of Diseases, 10th Revision
Feb 20, 2019

See: Mosquito-borne viral encephalitis

A83 is NOT a complete or valid ICD 10 diagnosis code.

You should code each health care encounter to the level of certainty known for that encounter. When sufficient clinical information is not known or available to assign a more specific code, it is acceptable to report the appropriate unspecified code.

See below for more specifc codes relating to
Mosquito-borne viral encephalitis
  • mosquito-borne viral meningoencephalitis
  • Venezuelan equine encephalitis (A92.2)
  • West Nile fever (A92.3-)
  • West Nile virus (A92.3-)

More specific codes for Mosquito-borne viral encephalitis

  • A83.0 - Japanese encephalitis
  • A83.1 - Western equine encephalitis
  • A83.2 - Eastern equine encephalitis
  • A83.3 - St Louis encephalitis
  • A83.4 - Australian encephalitis
  • A83.5 - California encephalitis
  • A83.6 - Rocio virus disease
  • A83.8 - Other mosquito-borne viral encephalitis
  • A83.9 - Mosquito-borne viral encephalitis, unspecified
See also ICD 10 code for
Back to A83
See the ICD-10-CM Coding Guidelines.

Questions related to A83 Mosquito-borne viral encephalitis

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.