Valid for Submission
H74.91 is a billable diagnosis code used to specify a medical diagnosis of unspecified disorder of right middle ear and mastoid. The code H74.91 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.
The ICD-10-CM code H74.91 might also be used to specify conditions or terms like disorder of right mastoid or disorder of right middle ear.
Unspecified diagnosis codes like H74.91 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Disorder of right mastoid
- Disorder of right middle ear
Diagnostic Related Groups - MS-DRG Mapping
|MS-DRG||MS-DRG Title||MCD||Relative Weight|
|154||OTHER EAR, NOSE, MOUTH AND THROAT DIAGNOSES WITH MCC||03||1.5425|
|155||OTHER EAR, NOSE, MOUTH AND THROAT DIAGNOSES WITH CC||03||0.9068|
|156||OTHER EAR, NOSE, MOUTH AND THROAT DIAGNOSES WITHOUT CC/MCC||03||0.6576|
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.
Convert H74.91 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code H74.91 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
Information for Patients
Your ear has three main parts: outer, middle and inner. You use all of them in hearing. Sound waves come in through your outer ear. They reach your middle ear, where they make your eardrum vibrate. The vibrations are transmitted through three tiny bones, called ossicles, in your middle ear. The vibrations travel to your inner ear, a snail-shaped organ. The inner ear makes the nerve impulses that are sent to the brain. Your brain recognizes them as sounds. The inner ear also controls balance.
A variety of conditions may affect your hearing or balance:
- Ear infections are the most common illness in infants and young children.
- Tinnitus, a roaring in your ears, can be the result of loud noises, medicines or a variety of other causes.
- Meniere's disease may be the result of fluid problems in your inner ear; its symptoms include tinnitus and dizziness.
- Ear barotrauma is an injury to your ear because of changes in barometric (air) or water pressure.
Some ear disorders can result in hearing disorders and deafness.
[Learn More in MedlinePlus]