Z20.7
Contact with and (suspected) exposure to pediculosis, acariasis and other infestations
Z20.7 (also written Z207) is a billable ICD-10-CM diagnosis code for contact with and (suspected) exposure to pediculosis, acariasis and other infestations. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 18 codes in category Z20 (Contact with and (suspected) exposure to communicable diseases). The Alphabetic Index lists it under 8 entries. Its coding notes include 2 Excludes1 entries and 1 Excludes2 entry.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Contact and exposure codes can be first-listed to explain an encounter for testing, or more commonly are secondary codes identifying a potential risk.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Notes
Also from chapter/block level (3 notes)
- Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
- (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
- (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 8 entries