Yaws
In Other spirochetal diseases (A65-A69), chapter 1: Certain Infectious and Parasitic Diseases
10 billable codes under A66: none are a CC or MCC; 1 map to HCC 92 (Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis).An HCC counts toward a Medicare Advantage patient's risk score.
Advertisements
Instructional notes
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Rules for coding infections and parasitic diseases, including HIV, organism and drug resistance codes, sepsis and septic shock, MRSA, Zika, and COVID-19.
- Human Immunodeficiency Virus (HIV) Infections (page 19)
- Infectious agents as the cause of diseases classified to other chapters (page 22)
- Infections resistant to antibiotics (page 22)
- Sepsis, Severe Sepsis, and Septic Shock (page 23)
- Methicillin Resistant Staphylococcus aureus (MRSA) Conditions (page 27)
- Zika virus infections (page 28)
- Coronavirus infections (page 28)
All codes under A66
A66 can't be used on a claim. Pick a billable code below; grey headings group them.
A66 MS-DRGs
As the principal diagnosis, the billable codes under A66 group to these 11 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 606 Minor Skin Disorders with MCC (5 of 10 codes)
- DRG 607 Minor Skin Disorders without MCC (5 of 10 codes)
- DRG 867 Other Infectious and Parasitic Diseases Diagnoses with MCC (3 of 10 codes)
- DRG 868 Other Infectious and Parasitic Diseases Diagnoses with CC (3 of 10 codes)
- DRG 869 Other Infectious and Parasitic Diseases Diagnoses without CC/MCC (3 of 10 codes)
- DRG 154 Other Ear, Nose, Mouth and Throat Diagnoses with MCC (1 of 10 codes)
- DRG 155 Other Ear, Nose, Mouth and Throat Diagnoses with CC (1 of 10 codes)
- DRG 156 Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC (1 of 10 codes)
- DRG 548 Septic Arthritis with MCC (1 of 10 codes)
- DRG 549 Septic Arthritis with CC (1 of 10 codes)
- DRG 550 Septic Arthritis without CC/MCC (1 of 10 codes)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Bacterial Infections
Bacteria are tiny organisms (living things) that have only one cell. Under a microscope, they look like balls, rods, or spirals. They can be found almost everywhere on Earth. There are lots of bacteria in and on your body. In fact, your body has about 10 times more bacteria cells than human cells.
Read more about bacterial infections on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.