Diagnosis Code


Code Information

Diagnosis Code: A27.9

Short Description: Leptospirosis, unspecified

Long Description: Leptospirosis, unspecified

The code A27.9 is VALID for claim submission

Code Classification:

  • Certain infectious and parasitic diseases (A00–B99)
    • Certain zoonotic bacterial diseases (A20-A28)
      • Leptospirosis (A27)
        • A27.9 Leptospirosis, unspecified

Code Version: 2022 ICD-10-CM


  • Anicteric leptospirosis
  • Anicteric leptospirosis
  • Encephalitis caused by Leptospira species
  • Infection - non-suppurative
  • Intracranial hemorrhage due to leptospirosis
  • Leptospira infection of the central nervous system
  • Leptospiral rash
  • Leptospirosis
  • Leptospirosis immune phase
  • Leptospirosis leptospiremic phase
  • Leptospirosis with cutaneous involvement
  • Miscarriage due to Leptospira
  • Non-pyogenic bacterial infection of skin
  • Pulmonary hemorrhage due to leptospirosis

Diagnostic Related Group(s)

The code A27.9 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)
  • Other Infectious And Parasitic Diseases Diagnoses With Mcc (867)
  • Other Infectious And Parasitic Diseases Diagnoses With Cc (868)
  • Other Infectious And Parasitic Diseases Diagnoses Without Cc/mcc (869)

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
A27.9 Right Arrow 100.9 Leptospirosis NOS

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
A27 Leptospirosis
A27.0 Leptospirosis icterohemorrhagica
A27.8 Other forms of leptospirosis
A27.81 Aseptic meningitis in leptospirosis
A27.89 Other forms of leptospirosis

This page was last updated on: 10/1/2021