Alphabetic Index FY2027

H95.88

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

FY2027Chapter 8: Diseases of the ear and mastoid process/H95 Intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified

BillableComplete code, valid to report
Care settingsHome Health Primary · MMTA - OtherHospital CC

H95.88 (also written H9588) 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 part of the FY2027 code set, effective October 1, 2026. It is one of the 36 codes in category H95 (Intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified). The Alphabetic Index lists it under 6 entries. Its coding notes include a Use additional code instruction and 9 Excludes2 entries.

Guidelines tip

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

Intraoperative and postprocedural complications are coded from the body system chapters unless the complication is specifically indexed to a T code.

Guidelines I.C.19.g.5Postprocedural complications in the body system chaptersRead the official text

Use additional code

Add the listed code as a secondary code, if known.

This code
  • code, if applicable, to further specify disorder

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from 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-)
Also from chapter/block level (8 notes)
Inherited from Chapter 8 Diseases of the ear and mastoid process
  • 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)

Care settings

How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.

Home Health Primary

Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the MMTA - Other clinical group.

Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026

Hospital CC

Counts as a complication or comorbidity (CC) when reported as a secondary diagnosis on an inpatient claim. It does not count when the principal diagnosis is one of the 48 codes in its exclusion list. Some MS-DRGs also ignore a CC or MCC that defines the DRG.

Source: CMS MS-DRG Definitions Manual v44, effective October 1, 2026, Appendix C

Notes

Also from chapter/block level (1 note)
Inherited from Chapter 8 Diseases of the ear and mastoid process
  • Use an external cause code following the code for the ear condition, if applicable, to identify the cause of the ear condition

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 6 entries