H70.1
Non-billableChronic mastoiditis
Chronic mastoiditis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Caries of mastoid
- Fistula of mastoid
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- tuberculous mastoiditis (A18.03)
Excludes 2
Conditions not included here, but the patient may have both
- 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)
Child Codes (4)
Also Known As / Clinical Terms
Frequently Asked Questions
What is ICD-10 code H70.1?
ICD-10-CM code H70.1 represents "Chronic mastoiditis". It is a non-billable header code — use a more specific child code for billing purposes.
Is H70.1 a billable code?
No, H70.1 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 4 child codes under H70.1.
What chapter is H70.1 in?
H70.1 is in Chapter 8: Diseases of the Ear and Mastoid Process (codes H60-H95).
What codes cannot be used with H70.1?
H70.1 has Excludes1 notes indicating codes that cannot be used together with it, including: tuberculous mastoiditis (A18.03).
What are the subcategories under H70.1?
H70.1 has 4 child codes, including: H70.10 (Chronic mastoiditis, unspecified ear), H70.11 (Chronic mastoiditis, right ear), H70.12 (Chronic mastoiditis, left ear), H70.13 (Chronic mastoiditis, bilateral).
What are the UMLS CUIs for H70.1?
H70.1 is linked to 3 UMLS Concept Unique Identifiers: C0271477, C0155447, C0271478. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.