2027 ICD-10-CM Diagnosis Code H95.88Other intraoperative complications and disorders of the ear and mastoid process, not elsewhere classified

ICD-10-CM Codes›H60–H95›H95›H95

ICD-10-CM H95.88
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H95.88 is a billable ICD-10-CM diagnosis code for other intraoperative complications and disorders of the ear and mastoid process, not elsewhere classified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 919 through 921. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 48 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative ear and/or mastoid process complication.

Code Identity

ICD-10-CM Code
H95.88
Billable Status
Yes — Valid for Submission
Code Describes
Other intraoperative complications and disorders of the ear and mastoid process, not elsewhere classified
Short Description
Oth intraop comp and disorders of the ear/mastd, NEC
Parent Code
H95.8
Other intraoperative and postprocedural complications and disorders of the ear and mastoid process, not elsewhere classified

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 CodeH95.88Other intraoperative complications and disorders of the ear and mastoid process, not elsewhere classified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H95.88: its own notes plus those printed at H95.8 and 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 H95.8 Other intraoperative and postprocedural complications and disorders of the ear and mastoid process, not elsewhere classified applies to 6 codes
  • postprocedural complications and disorders following mastoidectomy (H95.0-, H95.1-)
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)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

  • code, if applicable, to further specify disorder

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.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

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

CCSR EAR005
Postprocedural or postoperative ear and/or mastoid process complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert H95.88 to ICD-9-CMHistory

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

ICD-9-CM
997.99 Surg compl-body syst NEC
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 H95.88Overview

Is H95.88 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other intraoperative complications and disorders of the ear and mastoid process, not elsewhere classified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does H95.88 group to?

When other intraoperative complications and disorders of the ear and mastoid process, not elsewhere classified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 920, 919, 921, with relative weights from 0.6719 to 1.7624 depending on complications. Higher weights mean higher Medicare reimbursement.

Is H95.88 a CC or MCC?

CMS lists H95.88 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 48 closely related codes in its exclusion list.

Does H95.88 need an additional code?

When the condition applies, yes. The Use Additional Code note reads: code, if applicable, to further specify disorder. The additional code is reported after H95.88.

What is the ICD-9 equivalent of H95.88?

Under the General Equivalence Mappings, other intraoperative complications and disorders of the ear and mastoid process, not elsewhere classified converts to ICD-9-CM 997.99 (surg compl-body syst NEC). The mapping is approximate, so confirm the match fits the documentation.