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  6. 2024 ICD-10-CM Code H70.8
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code H70.8

Other mastoiditis and related conditions

ICD-10-CM Code:
H70.8
ICD-10 Code for:
Other mastoiditis and related conditions
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Diseases of the ear and mastoid process
    (H60–H95)
    • Diseases of middle ear and mastoid
      (H65-H75)
      • Mastoiditis and related conditions
        (H70)

H70.8 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other mastoiditis and related conditions. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Other mastoiditis and related conditions

Non-specific codes like H70.8 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for other mastoiditis and related conditions:

  • H70.81 for Postauricular fistula - NON-BILLABLE CODE

  • Use H70.811 for Postauricular fistula, right ear - BILLABLE CODE

  • Use H70.812 for Postauricular fistula, left ear - BILLABLE CODE

  • Use H70.813 for Postauricular fistula, bilateral - BILLABLE CODE

  • Use H70.819 for Postauricular fistula, unspecified ear - BILLABLE CODE

  • H70.89 for Other mastoiditis and related conditions - NON-BILLABLE CODE

  • Use H70.891 for Other mastoiditis and related conditions, right ear - BILLABLE CODE

  • Use H70.892 for Other mastoiditis and related conditions, left ear - BILLABLE CODE

  • Use H70.893 for Other mastoiditis and related conditions, bilateral - BILLABLE CODE

  • Use H70.899 for Other mastoiditis and related conditions, unspecified ear - BILLABLE CODE

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • preauricular sinus and cyst Q18.1
  • sinus, fistula, and cyst of branchial cleft Q18.0

Patient Education


Ear Infections

Ear infections are the most common reason parents bring their child to a doctor. Three out of four children will have at least one ear infection by their third birthday. Adults can also get ear infections, but they are less common.

The infection usually affects the middle ear and is called otitis media. The tubes inside the ears become clogged with fluid and mucus. This can affect hearing, because sound cannot get through all that fluid.

If your child isn't old enough to say "My ear hurts," here are a few things to look for:

  • Tugging at ears
  • Crying more than usual
  • Fluid draining from the ear
  • Trouble sleeping
  • Balance difficulties
  • Hearing problems

Your health care provider will diagnose an ear infection by looking inside the ear with an instrument called an otoscope.

Often, ear infections go away on their own. Your health care provider may recommend pain relievers. Severe infections and infections in young babies may require antibiotics.

Children who get infections often may need surgery to place small tubes inside their ears. The tubes relieve pressure in the ears so that the child can hear again.

NIH: National Institute on Deafness and Other Communication Disorders


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.