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ICD-10-CM 2027 diagnosis code

A36.8Other diphtheria

Not billable — use a more specific code

A36.8 is a header code, so it can't be reported by itself. Choose one of the 7 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About A36.8

A36.8 is the ICD-10-CM diagnosis code for other diphtheria. It belongs to category A36 (diphtheria), block A30-A49 (other bacterial diseases) and chapter 1 (certain infectious and parasitic diseases). It is a header code, so it can't be reported by itself; one of its 7 subcodes must be used instead.

Within A36, choose A36.8 (Other diphtheria) only when documentation doesn't support a more specific option: pharyngeal diphtheria (A36.0), nasopharyngeal diphtheria (A36.1), laryngeal diphtheria (A36.2), cutaneous diphtheria (A36.3) and unspecified (A36.9).

To report this condition, pick the subcode that matches the documentation: A36.81 (cardiomyopathy), A36.82 (radiculomyelitis), A36.83 (polyneuritis), A36.84 (nephropathy), A36.85 (cystitis), A36.86 (conjunctivitis) and A36.89 (complications).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under A36.8

Notes that apply from higher levels

Instructions written at a parent level also apply to A36.8.

Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about A36.8

Is A36.8 billable?

No. A36.8 is a header code. Report one of its more specific subcodes instead.