K91.1 vs T81.72XD

K91.1 (Postgastric surgery syndromes) compared with T81.72XD (Complication of vein following a procedure, not elsewhere classified, subsequent encounter), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Relationship

Informational

Excludes2 relationship

T81.72XD

Complication of vein following a procedure, not elsewhere classified, subsequent encounter

↔

K91.1

Postgastric surgery syndromes

Distinct conditions — both may be reported.

“intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-)”

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source: CMS ICD-10-CM tabular instructional notes

Can these codes be reported together?

Yes, when both are documented. T81.72XD carries an Excludes2 note covering K91.1: “intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

	K91.1Postgastric surgery syndromes	T81.72XDComplication of vein following a procedure, not elsewhere classified, subsequent encounter
Billing status	Billable	Billable
Classification	K00-K95 — Diseases of the Digestive System (K00-K95)	S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
Definition	Postgastric surgery syndromes is a billable ICD-10-CM diagnosis code (K91.1).	Complication of vein following a procedure, not elsewhere classified, subsequent encounter is a billable ICD-10-CM diagnosis code (T81.72D).
7th character	—	The appropriate 7th character is to be added to each code from category T81
Includes	Dumping syndrome Postgastrectomy syndrome Postvagotomy syndrome	—
Use additional code	—	code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) code(s) to identify the specified condition resulting from the complication code to identify devices involved and details of circumstances (Y62-Y82)

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