2026 ICD-10-CM Diagnosis Code H73.12Chronic myringitis, left ear

ICD-10-CM Codes›H60–H95›H65-H75›H73

ICD-10-CM H73.12
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H73.12 is a billable ICD-10-CM diagnosis code for chronic 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 chronic left 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
H73.12
Billable Status
Yes — Valid for Submission
Code Describes
Chronic myringitis, left ear
Short Description
Chronic myringitis, left ear
Same as the full description in the CMS dataset.
Parent Code
H73.1
Chronic myringitis

Code Classification

ChapterH60–H95Diseases of the ear and mastoid process
SectionH65-H75Diseases of middle ear and mastoid
CategoryH73Other disorders of tympanic membrane
This CodeH73.12Chronic myringitis, left ear

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chronic left myringitis
  • Chronic tympanitis

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

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Convert H73.12 to ICD-9-CMHistory

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

ICD-9-CM
384.1 Chronic myringitis
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 H73.12Overview

Is H73.12 (Chronic myringitis) a billable code?

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

What MS-DRG does H73.12 group to?

When chronic 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 H73.12?

Under the General Equivalence Mappings, chronic myringitis, left ear converts to ICD-9-CM 384.1 (chronic myringitis). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.