Alphabetic Index FY2027

H74

Other disorders of middle ear mastoid

FY2027Chapter 8: Diseases of the ear and mastoid process/H65–H75 Diseases of middle ear and mastoid

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

H74 is a non-billable ICD-10-CM code category for other disorders of middle ear mastoid. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are H74.0 Tympanosclerosis, H74.1 Adhesive middle ear disease, H74.2 Discontinuity and dislocation of ear ossicles, H74.3 Other acquired abnormalities of ear ossicles and 3 more. Its coding notes include 9 Excludes2 entries.

Excludes2

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

This code
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)

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

More specific codes under H74 7