A36
⚠ Non-billable
Diphtheria
ICD-10-CM · FY2026 · Certain Infectious and Parasitic Diseases
Code
A36
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Certain Infectious and Parasitic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code A36?
ICD-10-CM code A36 represents Diphtheria. It is a non-billable header code requiring a more specific subcategory in the Certain Infectious and Parasitic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is A36 billable?
No. A36 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is A36 in?
A36 belongs to the Certain Infectious and Parasitic Diseases chapter (A00–B99) of ICD-10-CM.
Related codes in the A36 category
A36.0
Pharyngeal diphtheria
Billable
A36.1
Nasopharyngeal diphtheria
Billable
A36.2
Laryngeal diphtheria
Billable
A36.3
Cutaneous diphtheria
Billable
A36.8
Other diphtheria
Non-billable
A36.9
Diphtheria, unspecified
Billable
A36.81
Diphtheritic cardiomyopathy
Billable
A36.82
Diphtheritic radiculomyelitis
Billable
Search all 98,186 ICD-10-CM codes instantly
Search ICDwise →