2025 ICD-10-CM code Z90

Acquired absence of organs, not elsewhere classified. Includes post-procedural or post-traumatic loss of body part NEC.

A Z code may be used as a primary code if the absence of the organ is the reason for the encounter, for example, for surveillance or management of complications.If the encounter is related to a current illness or injury, the related diagnosis code should be the principal diagnosis. If a procedure is performed, a procedure code must also be reported.

The Z90 code itself does not justify medical necessity for specific procedures or treatments.It provides context for the patient's current health status. Medical necessity for related services must be supported by the underlying condition or the functional impairments resulting from the organ absence.

The physician is responsible for documenting the specific organ absent, the reason for the absence (e.g., trauma, surgery), and any associated functional impairments.It is crucial to ensure accurate documentation to justify the medical necessity of any related services.

In simple words: This code indicates that a person is missing an organ due to an injury, surgery, or other acquired reason, and this absence is not described by a more specific code.

Acquired absence of organs, not elsewhere classified. This code includes the post-procedural or post-traumatic loss of a body part not elsewhere classified (NEC).It excludes congenital absence (refer to the Alphabetical Index) and post-procedural absence of endocrine glands (E89.-).

Example 1: A patient had their spleen removed (splenectomy) following a car accident. The acquired absence of the spleen would be coded as Z90., A patient underwent a nephrectomy (kidney removal) due to cancer. The absence of the kidney would be coded Z90., A patient had a limb amputated due to complications from diabetes.The absence of the limb would be coded as Z90.

Documentation should clearly specify the absent organ, the circumstances leading to its absence (e.g., trauma, surgery, disease), the date of the event, and any related complications or functional deficits.

** Use additional codes to specify the underlying reason for the organ's absence if known. For example, if the organ was removed due to cancer, the appropriate cancer code should also be reported.

  • Specialties:General surgery, trauma surgery, any specialty involved in organ removal or management of patients with missing organs.
  • Place of Service:Inpatient Hospital, On Campus-Outpatient Hospital, Off Campus-Outpatient Hospital, Physician's Office, and other places of service depending on the specific reason for the encounter.
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