2027 ICD-10-CM Diagnosis Code H95.111Chronic inflammation of postmastoidectomy cavity, right ear

ICD-10-CM Codes›H60–H95›H95›H95

ICD-10-CM H95.111
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H95.111 is a billable ICD-10-CM diagnosis code for chronic inflammation of postmastoidectomy cavity, right ear. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 154 through 156. Coders also document this condition as chronic inflammation of mastoid cavity. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Diseases of middle ear and mastoid (except otitis media) and Postprocedural or postoperative ear and/or mastoid process complication.

Code Identity

ICD-10-CM Code
H95.111
Billable Status
Yes — Valid for Submission
Code Describes
Chronic inflammation of postmastoidectomy cavity, right ear
Short Description
Chronic inflammation of postmastoidectomy cavity, right ear
Same as the full description in the CMS dataset.
Parent Code
H95.11
Chronic inflammation of postmastoidectomy cavity

Code Classification

ChapterH60–H95Diseases of the ear and mastoid process
SectionH95Intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified
CategoryH95Intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified
This CodeH95.111Chronic inflammation of postmastoidectomy cavity, right ear

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chronic inflammation of mastoid cavity
  • Chronic inflammation of right mastoid cavity
  • Chronic mastoiditis
  • Chronic right mastoiditis
  • Right mastoiditis

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H95.111: its own notes plus those printed at Chapter 8. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 8 (H60-H95) Diseases of the ear and mastoid process applies to 653 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Notes

General instructions on how these codes are used.

From Chapter 8 (H60-H95) Diseases of the ear and mastoid process applies to 653 codes
  • Use an external cause code following the code for the ear condition, if applicable, to identify the cause of the ear condition

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name H95.111, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming H95.111: its condition is not part of those codes, and both may be reported when the patient has both.

  • H95.8 Other intraoperative and postprocedural complications and disorders of the ear and mastoid process, not elsewhere classified
    postprocedural complications and disorders following mastoidectomy (H95.0-, H95.1-) names H95.1-, which includes this code

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 No · outpatient No
CCSR EAR005
Postprocedural or postoperative ear and/or mastoid process complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert H95.111 to ICD-9-CMHistory

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

ICD-9-CM
383.30 Postmastoid compl 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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About H95.111Overview

What is the ICD-10 code for chronic inflammation of postmastoidectomy cavity, right ear?

The ICD-10-CM code for chronic inflammation of postmastoidectomy cavity, right ear is H95.111 (sometimes written as H95111). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is H95.111 (Chronic inflammation of postmastoidectomy cavity) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report chronic inflammation of postmastoidectomy cavity, right ear on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does H95.111 group to?

When chronic inflammation of postmastoidectomy cavity, right ear is the principal diagnosis on an inpatient stay, it groups to MS-DRG 156, 155, 154, with relative weights from 0.6656 to 1.5916 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of H95.111?

Under the General Equivalence Mappings, chronic inflammation of postmastoidectomy cavity, right ear converts to ICD-9-CM 383.30 (postmastoid compl NOS). The mapping is approximate, so confirm the match fits the documentation.