H95.11Chronic inflammation of postmastoidectomy cavity

H95.11 is the ICD-10-CM diagnosis code for chronic inflammation of postmastoidectomy cavity. It belongs to category H95 (intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified), block H95 (intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified) and chapter 8 (diseases of the ear and mastoid process). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within H95.1 (other disorders of ear and mastoid process following mastoidectomy), H95.11 is specifically for chronic inflammation of postmastoidectomy cavity. Related codes cover granulation of postmastoidectomy cavity (H95.12), mucosal cyst of postmastoidectomy cavity (H95.13) and other disorders following mastoidectomy (H95.19).

To report this condition, pick the subcode that matches the documentation: H95.111 (right ear), H95.112 (left ear), H95.113 (bilateral ears) and H95.119 (unspecified ear).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.