Full Answer
The ICD10 code for the diagnosis "Other nonspecific abnormal finding of lung field" is "R91.8". R91.8 is a VALID/BILLABLE ICD10 code, i.e it is valid for submission for HIPAA-covered transactions.
The 2019 edition of ICD-10-CM R91.8 became effective on October 1, 2018.
R91.8 - Other nonspecific abnormal finding of lung field
R91.8 is not a CC or MCC.