K08.26

Severe atrophy of the maxilla

FY2027Chapter 11: Diseases of the digestive system/K00–K14 Diseases of oral cavity and salivary glands

BillableComplete code, valid to report

Excludes2

K08.26 (also written K0826) is a billable ICD-10-CM diagnosis code for severe atrophy of the maxilla. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 73 codes in category K08 (Other disorders of teeth and supporting structures). The Alphabetic Index lists it under 1 entry. Its coding notes include 10 Excludes2 entries.

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from K08 Other disorders of teeth and supporting structures

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

Also from chapter/block level (8 notes)

Inherited from Chapter 11 Diseases of the digestive system

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Inclusion terms

Conditions classified to this code.

This code

Severe atrophy of the edentulous maxilla

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 1 entry

Atrophy, atrophic (of), maxilla, severe

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Subcategory8 at this level K08.2 Atrophy of edentulous alveolar ridge

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Care settings pills come from CMS program files. Green outline: on a CMS list. Red outline: not accepted. Blue outline: hospital CC, MCC and HAC flags, IPF (inpatient psychiatric) pills, and IRF codes that count only in combination. No Home Health Primary pill means the code is not accepted as a primary diagnosis. IPF Primary shows the MS-DRG a principal diagnosis groups to and its payment adjustment; IPF Comorbidity is a secondary-diagnosis payment category.

Fiscal year

You are viewing FY2027. Always code with the year that matches the date of service or discharge.

FY2027 Effective October 1, 2026