A36.0

Billable

ChapterA00–B99

Ranksubcategory

Official Description

Pharyngeal diphtheria

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

Instructional Notes

Includes

Diphtheritic membranous angina
Tonsillar diphtheria

General instructions are available for the parent sections:

View CH1 Notes

Clinical Hierarchy

CH1Certain infectious and parasitic diseases (A00-B99)

A30-A49Other bacterial diseases (A30-A49)

A36Diphtheria

A36.0Pharyngeal diphtheria

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A36.0:

chapterCH1

Certain infectious and parasitic diseases (A00-B99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to A36.0. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

19 raw paths

Angina (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor)6 unique routes

diphtheritic, membranous→A36.0

gangrenous diphtheritic→A36.0

malignant diphtheritic→A36.0

pultaceous, diphtheritic→A36.0

Bretonneau's disease or angina1 unique routes

Direct index entry→A36.0

Diphtheria, diphtheritic (gangrenous) (hemorrhagic)3 unique routes

faucial→A36.0

pharyngeal→A36.0

tonsillar→A36.0

Disease, diseased1 unique routes

Bretonneau's (diphtheritic malignant angina)→A36.0

Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)1 unique routes

throat

diphtheritic→A36.0

Paralysis, paralytic (complete) (incomplete)2 unique routes

throat

diphtheritic→A36.0

uvula

postdiphtheritic→A36.0

Pharyngitis (acute) (catarrhal)(gangrenous) (infective) (malignant) (membranous) (phlegmonous) (pseudomembranous) (simple) (subacute) (suppurative) (ulcerative) (viral)1 unique routes

diphtheritic→A36.0

Sore1 unique routes

throat (acute)

diphtheritic→A36.0

Tonsillitis (acute) (catarrhal) (croupous) (follicular) (gangrenous) (infective) (lacunar) (lingual) (malignant) (membranous) (parenchymatous) (phlegmonous) (pseudomembranous) (purulent) (septic) (subacute) (suppurative) (toxic) (ulcerative) (vesicular) (viral)1 unique routes

diphtheritic→A36.0

Ulcer, ulcerated, ulcerating, ulceration, ulcerative2 unique routes

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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