A74
A74: Other diseases caused by chlamydiae
Non-billable headerICD-10-CM
A74 is a non-billable header ICD-10-CM code for other diseases caused by chlamydiae. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Excludes2: not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
- chlamydial pneumonia (J16.0)
Other codes that can never be billed with A74
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead A74
3 child codes. Green means billable.