2021 ICD-10-CM Diagnosis Code H95.13

Mucosal cyst of postmastoidectomy cavity

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • H95.13 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM H95.13 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of H95.13 - other international versions of ICD-10 H95.13 may differ.
The following code(s) above H95.13 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to H95.13:
  • H60-H95
    2021 ICD-10-CM Range H60-H95

    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
    Type 2 Excludes
    • 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)
    Diseases of the ear and mastoid process
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change

Diagnosis Index entries containing back-references to H95.13:
  • Complication(s) (from) (of)
    • postmastoidectomy NEC H95.19-
      ICD-10-CM Diagnosis Code H95.19-

      Other disorders following mastoidectomy

        2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
      • cyst, mucosal H95.13-

ICD-10-CM Codes Adjacent To H95.13
H95.11 Chronic inflammation of postmastoidectomy cavity
H95.111 …… right ear
H95.112 …… left ear
H95.113 …… bilateral ears
H95.119 …… unspecified ear
H95.12 Granulation of postmastoidectomy cavity
H95.121 …… right ear
H95.122 …… left ear
H95.123 …… bilateral ears
H95.129 …… unspecified ear
H95.13 Mucosal cyst of postmastoidectomy cavity
H95.131 …… right ear
H95.132 …… left ear
H95.133 …… bilateral ears
H95.139 …… unspecified ear
H95.19 Other disorders following mastoidectomy
H95.191 …… right ear
H95.192 …… left ear
H95.193 …… bilateral ears
H95.199 …… unspecified ear
H95.2 Intraoperative hemorrhage and hematoma of ear and mastoid process complicating a procedure

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.