2026 ICD-10-CM Diagnosis Code H73.002Acute myringitis, left ear

ICD-10-CM Codes›H60–H95›H65-H75›H73

ICD-10-CM H73.002
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H73.002 is a billable ICD-10-CM diagnosis code for acute myringitis, left ear. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 152 through 153. Coders also document this condition as acute myringitis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Diseases of middle ear and mastoid (except otitis media).

Code Identity

ICD-10-CM Code
H73.002
Billable Status
Yes — Valid for Submission
Code Describes
Acute myringitis, left ear
Short Description
Acute myringitis, left ear
Same as the full description in the CMS dataset.
Parent Code
H73.00
Unspecified acute myringitis

Code Classification

ChapterH60–H95Diseases of the ear and mastoid process
SectionH65-H75Diseases of middle ear and mastoid
CategoryH73Other disorders of tympanic membrane
This CodeH73.002Acute myringitis, left ear

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute myringitis
  • Acute myringitis of left ear

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR EAR002
Diseases of middle ear and mastoid (except otitis media)
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Ear Disorders

Your ear has three main parts: outer, middle and inner. You use all of them in hearing. Sound waves come in through your outer ear. They reach your middle ear, where they make your eardrum vibrate. The vibrations are transmitted through three tiny bones, called ossicles, in your middle ear.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert H73.002 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
384.00 Acute myringitis NOS
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About H73.002Overview

Is H73.002 (Unspecified acute myringitis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report acute myringitis, left ear on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does H73.002 group to?

When acute myringitis, left ear is the principal diagnosis on an inpatient stay, it groups to MS-DRG 152, 153, with relative weights from 0.7382 to 1.1822 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of H73.002?

Under the General Equivalence Mappings, acute myringitis, left ear converts to ICD-9-CM 384.00 (acute myringitis NOS). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.