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

2024 ICD-10-CM Diagnosis Code H70

Mastoiditis and related conditions

ICD-10-CM Code:
H70
ICD-10 Code for:
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 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of 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 Mastoiditis and related conditions

Non-specific codes like H70 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 mastoiditis and related conditions:

  • H70.0 for Acute mastoiditis - NON-BILLABLE CODE

  • H70.00 for Acute mastoiditis without complications - NON-BILLABLE CODE

  • H70.01 for Subperiosteal abscess of mastoid - NON-BILLABLE CODE

  • H70.09 for Acute mastoiditis with other complications - NON-BILLABLE CODE

  • H70.1 for Chronic mastoiditis - NON-BILLABLE CODE

  • Use H70.10 for Chronic mastoiditis, unspecified ear - BILLABLE CODE

  • Use H70.11 for Chronic mastoiditis, right ear - BILLABLE CODE

  • Use H70.12 for Chronic mastoiditis, left ear - BILLABLE CODE

  • Use H70.13 for Chronic mastoiditis, bilateral - BILLABLE CODE

  • H70.2 for Petrositis - NON-BILLABLE CODE

  • H70.20 for Unspecified petrositis - NON-BILLABLE CODE

  • H70.21 for Acute petrositis - NON-BILLABLE CODE

  • H70.22 for Chronic petrositis - NON-BILLABLE CODE

  • H70.8 for Other mastoiditis and related conditions - NON-BILLABLE CODE

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

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

  • H70.9 for Unspecified mastoiditis - NON-BILLABLE CODE

  • Use H70.90 for Unspecified mastoiditis, unspecified ear - BILLABLE CODE

  • Use H70.91 for Unspecified mastoiditis, right ear - BILLABLE CODE

  • Use H70.92 for Unspecified mastoiditis, left ear - BILLABLE CODE

  • Use H70.93 for Unspecified mastoiditis, bilateral - BILLABLE CODE

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.