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E08 vs M14.639

E08 (Diabetes mellitus due to underlying condition) compared with M14.639 (Charcôt's joint, unspecified wrist), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.

Relationship

Conflict

Excludes1 conflict

M14.639
Charcôt's joint, unspecified wrist
E08
Diabetes mellitus due to underlying condition

Not coded here — these two are mutually exclusive.

“Charcôt's joint in diabetes mellitus (E08-E13 with .610)”

An Excludes1 note means the two conditions cannot occur together, so the pair should not be reported for the same encounter. The sole exception is when the conditions are documented as unrelated to each other.

Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a

Conflict

Excludes1 conflict

M14.639
Charcôt's joint, unspecified wrist
E08
Diabetes mellitus due to underlying condition

Not coded here — these two are mutually exclusive.

“diabetes mellitus (E08-E13 with .61-)”

An Excludes1 note means the two conditions cannot occur together, so the pair should not be reported for the same encounter. The sole exception is when the conditions are documented as unrelated to each other.

Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a

Can these codes be reported together?

No — do not report together. M14.639 carries an Excludes1 note covering E08: “Charcôt's joint in diabetes mellitus (E08-E13 with .610)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

No — do not report together. M14.639 carries an Excludes1 note covering E08: “diabetes mellitus (E08-E13 with .61-)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Side by side

E08Diabetes mellitus due to underlying conditionM14.639Charcôt's joint, unspecified wrist
Billing statusNon-billable header

Report instead: E08.00, E08.01, E08.10, E08.11, E08.21

Billable
ClassificationE00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89)M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)
DefinitionDiabetes mellitus due to underlying condition is a non-billable ICD-10-CM category code (E08).Charcôt's joint, unspecified wrist is a billable ICD-10-CM diagnosis code (M14.639).
Use additional code
code to identify control using:
injectable non-insulin antidiabetic drugs (Z79.85)
insulin (Z79.4)
Code first
the underlying condition, such as:
congenital rubella (P35.0)

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources