2024 ICD-10-CM Diagnosis Code H95.133

Mucosal cyst of postmastoidectomy cavity, bilateral ears

ICD-10-CM Code:
H95.133
ICD-10 Code for:
Mucosal cyst of postmastoidectomy cavity, bilateral ears
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Diseases of the ear and mastoid process
    (H60–H95)
    • Intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified
      (H95)
      • Intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified
        (H95)

H95.133 is a billable diagnosis code used to specify a medical diagnosis of mucosal cyst of postmastoidectomy cavity, bilateral ears. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Clinical Classification

Clinical CategoryCCSR Category CodeInpatient Default CCSROutpatient Default CCSR
Diseases of middle ear and mastoid (except otitis media)EAR002N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.
Postprocedural or postoperative ear and/or mastoid process complicationEAR005Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.

Convert H95.133 to ICD-9-CM

  • ICD-9-CM Code: 383.31 - Postmastoid mucosal cyst
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

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.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.