2022 ICD-10-CM Code A27.9
Leptospirosis, unspecified
Code Classification
A27.9 is a billable diagnosis code used to specify a medical diagnosis of leptospirosis, unspecified. The code A27.9 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.
The ICD-10-CM code A27.9 might also be used to specify conditions or terms like anicteric leptospirosis, anicteric leptospirosis, encephalitis caused by leptospira species, infection - non-suppurative, intracranial hemorrhage due to leptospirosis , leptospira infection of the central nervous system, etc.
Unspecified diagnosis codes like A27.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
Entries in the Index to Diseases and Injuries with references to A27.9
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code A27.9 are found in the index:
- - Leptospirosis - A27.9
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- 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
Clinical Information
- LEPTOSPIROSIS-. infections with bacteria of the genus leptospira.
- WEIL DISEASE-. a severe form of leptospirosis usually caused by leptospira interrogans serovar icterohaemorrhagiae and occasionally other serovars. it is transmitted to humans by the rat and is characterized by hemorrhagic and renal symptoms with accompanying jaundice.
Diagnostic Related Groups - MS-DRG Mapping
The ICD-10 code A27.9 is grouped in the following groups for version MS-DRG V39.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). applicable from 10/01/2021 through 09/30/2022.
| MS-DRG | MS-DRG Title | MCD | Relative Weight |
|---|---|---|---|
| 867 | OTHER INFECTIOUS AND PARASITIC DISEASES DIAGNOSES WITH MCC | 18 | 2.2295 |
| 868 | OTHER INFECTIOUS AND PARASITIC DISEASES DIAGNOSES WITH CC | 18 | 1.0584 |
| 869 | OTHER INFECTIOUS AND PARASITIC DISEASES DIAGNOSES WITHOUT CC/MCC | 18 | 0.726 |
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.
Convert A27.9 to ICD-9 Code
- 100.9 - Leptospirosis NOS
Information for Patients
Bacterial Infections
Bacteria are living things that have only one cell. Under a microscope, they look like balls, rods, or spirals. They are so small that a line of 1,000 could fit across a pencil eraser. Most bacteria won't hurt you - less than 1% of the different types make people sick. Many are helpful. Some bacteria help to digest food, destroy disease-causing cells, and give the body needed vitamins. Bacteria are also used in making healthy foods like yogurt and cheese.
But infectious bacteria can make you ill. They reproduce quickly in your body. Many give off chemicals called toxins, which can damage tissue and make you sick. Examples of bacteria that cause infections include Streptococcus, Staphylococcus, and E. coli.
Antibiotics are the usual treatment. When you take antibiotics, follow the directions carefully. Each time you take antibiotics, you increase the chances that bacteria in your body will learn to resist them causing antibiotic resistance. Later, you could get or spread an infection that those antibiotics cannot cure.
NIH: National Institute of Allergy and Infectious Diseases
[Learn More in MedlinePlus]
Related Codes
Code History
- FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
- FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
- FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
- FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
- FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
- FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)
