K08.4Partial loss of teeth

K08.4 is the ICD-10-CM diagnosis code for partial loss of teeth. It belongs to category K08 (other disorders of teeth and supporting structures), block K00-K14 (diseases of oral cavity and salivary glands) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

Within K08 (other disorders of teeth and supporting structures), K08.4 is specifically for partial loss of teeth. Related codes cover Exfoliation of teeth due to systemic causes (K08.0), complete loss of teeth (K08.1), atrophy of edentulous alveolar ridge (K08.2), retained dental root (K08.3), unsatisfactory restoration of tooth (K08.5), other specified disorders of teeth and supporting structures (K08.8) and disorder of teeth and supporting structures, unspecified (K08.9).

To report this condition, pick the subcode that matches the documentation: K08.40 (unspecified cause), K08.41 (due to trauma), K08.42 (due to periodontal diseases), K08.43 (due to caries) and K08.49 (due to other specified cause).

Don't report K08.4 together with the conditions in its Excludes1 note: complete loss of teeth (K08.1-) and congenital absence of teeth (K00.0).

The conditions in its Excludes2 note aren't part of K08.4, but may be coded alongside it if the patient has both: exfoliation of teeth due to systemic causes (K08.0).

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