2027 ICD-10-CM Diagnosis Code H95.31Accidental puncture and laceration of the ear and mastoid process during a procedure on the ear and mastoid process

ICD-10-CM Codes›H60–H95›H95›H95

ICD-10-CM H95.31
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H95.31 is a billable ICD-10-CM diagnosis code for accidental puncture and laceration of the ear and mastoid process during a procedure on the ear and mastoid process. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 791, 793, 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 78 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
H95.31
Billable Status
Yes — Valid for Submission
Code Describes
Accidental puncture and laceration of the ear and mastoid process during a procedure on the ear and mastoid process
Short Description
Acc pnctr & lac of the ear/mastd dur proc on the ear/mastd
Parent Code
H95.3
Accidental puncture and laceration of ear and mastoid process during a procedure

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 CodeH95.31Accidental puncture and laceration of the ear and mastoid process during a procedure on the ear and mastoid process

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H95.31: 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 H95.31, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming H95.31: they are not reported together with it, unless the two conditions are unrelated.

  • H95.2 Intraoperative hemorrhage and hematoma of ear and mastoid process complicating a procedure
    intraoperative hemorrhage and hematoma of ear and mastoid process due to accidental puncture or laceration during a procedure (H95.3-) names H95.3-, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming H95.31: its condition is not part of those codes, and both may be reported when the patient has both.

  • Block T80-T88 Complications of surgical and medical care, not elsewhere classified
    intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-) names H95.3, which includes this code
  • T81 Complications of procedures, not elsewhere classified
    intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-) names H95.3, which includes this code

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 H95.31 to ICD-9-CMHistory

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

ICD-9-CM
998.2 Accidental op laceration
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 H95.31Overview

Is H95.31 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report accidental puncture and laceration of the ear and mastoid process during a procedure on the ear and mastoid process on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does H95.31 group to?

When accidental puncture and laceration of the ear and mastoid process during a procedure on the ear and mastoid process is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, 920, 919, 921, with relative weights from 0.6719 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.

Is H95.31 a CC or MCC?

CMS lists H95.31 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 78 closely related codes in its exclusion list.

What is the ICD-9 equivalent of H95.31?

Under the General Equivalence Mappings, accidental puncture and laceration of the ear and mastoid process during a procedure on the ear and mastoid process converts to ICD-9-CM 998.2 (accidental op laceration). The mapping is approximate, so confirm the match fits the documentation.