K08.401 Partial loss of teeth, unspecified cause, class I

Billable ICD-10-CM code, FY2026.

Applies from K08 Other disorders of teeth and supporting structures

Excludes2 (not included here)

• dentofacial anomalies [including malocclusion] (M26.-)
• disorders of jaw (M27.-)

Applies from K08.4 Partial loss of teeth

Applicable to

• Acquired loss of teeth, partial

Excludes1 (never code together)

• complete loss of teeth (K08.1-)
• congenital absence of teeth (K00.0)

Excludes2 (not included here)

• exfoliation of teeth due to systemic causes (K08.0)

MS-DRG index

Defines the logic of DRG(s) 011-013 in MDC PRE.

Approximate ICD-9-CM (GEMs)

• 525.10 Acquired absence of teeth, unspecified (approximate)
• 525.51 Partial edentulism, class I (approximate)

Code annotations containing back-references to K08.401

Back-references to K08.4

• Type 1 Excludes: K08.1 Complete loss of teeth ("partial loss of teeth (K08.4-)")

Diagnosis Index entries for K08.401

• Absence (of) (organ or part) (complete or partial) › teeth, tooth (congenital) › acquired (complete) › partial › class I

Nearby codes

• K08.25 Moderate atrophy of the maxilla
• K08.26 Severe atrophy of the maxilla
• K08.3 Retained dental root
• K08.4 Partial loss of teeth
• K08.40 Partial loss of teeth, unspecified cause
• K08.401 Partial loss of teeth, unspecified cause, class I (this code)
• K08.402 Partial loss of teeth, unspecified cause, class II
• K08.403 Partial loss of teeth, unspecified cause, class III
• K08.404 Partial loss of teeth, unspecified cause, class IV
• K08.409 Partial loss of teeth, unspecified cause, unspecified class
• K08.41 Partial loss of teeth due to trauma