ICD-10-CM 2027 diagnosis code

J05Acute obstructive laryngitis [croup] and epiglottitis

Not billable — use a more specific code

J05 is a header code, so it can't be reported by itself. Choose one of the 2 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 J05

J05 is the ICD-10-CM diagnosis code for acute obstructive laryngitis [croup] and epiglottitis. It belongs to block J00-J06 (acute upper respiratory infections) and chapter 10 (diseases of the respiratory system). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: J05.0 ([croup]) and J05.1 (epiglottitis).

Use an additional code (B95-B97) to identify infectious agent.

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 J05

Coding notes

Use additional codeAdd a secondary code to fully describe the condition

code (B95-B97) to identify infectious agent.

Code alsoTwo codes may be needed; sequencing depends on circumstances

, influenza, if present, such as:
influenza due to identified novel influenza A virus with other respiratory manifestations (J09.X2)
influenza due to other identified influenza virus with other respiratory manifestations (J10.1)
influenza due to unidentified influenza virus with other respiratory manifestations (J11.1)

Notes that apply from higher levels

Instructions written at a parent level also apply to J05.

Broader instructions also apply from J00-J06 Acute upper respiratory infections and Chapter 10: Diseases of the respiratory system.

Codes whose notes reference J05

J04Excludes1

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about J05

Is J05 billable?: No. J05 is a header code. Report one of its more specific subcodes instead.