Acquired absence of organs, not elsewhere classified

Instructional notes

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers when and how to use Z codes (Z00-Z99) for encounters and supplementary information, including contact, status, history, screening, aftercare, exams, and social determinants of health.

• Use of Z Codes in Any Healthcare Setting (page 92)
• Z Codes Indicate a Reason for an Encounter or Provide Additional Information about a Patient Encounter (page 93)
• Categories of Z Codes (page 93)

Read Section I.C.21 (page 92)

All codes under Z90

Z90 can't be used on a claim. Pick a billable code below; grey headings group them.

• Z90.0Acquired absence of part of head and neck
• Z90.01Acquired absence of eye
• Z90.02Acquired absence of larynx
• Z90.09Acquired absence of other part of head and neck
• Z90.1Acquired absence of breast and nipple
• Z90.10Acquired absence of unspecified breast and nipple
• Z90.11Acquired absence of right breast and nipple
• Z90.12Acquired absence of left breast and nipple
• Z90.13Acquired absence of bilateral breasts and nipples
• Z90.2Acquired absence of lung [part of]
• Z90.3Acquired absence of stomach [part of]
• Z90.4Acquired absence of other specified parts of digestive tract
• Z90.41Acquired absence of pancreas
• Z90.410Acquired total absence of pancreas
• Z90.411Acquired partial absence of pancreas
• Z90.49Acquired absence of other specified parts of digestive tract
• Z90.5Acquired absence of kidney
• Z90.6Acquired absence of other parts of urinary tract
• Z90.7Acquired absence of genital organ(s)
• Z90.71Acquired absence of cervix and uterus
• Z90.710Acquired absence of both cervix and uterus
• Z90.711Acquired absence of uterus with remaining cervical stump
• Z90.712Acquired absence of cervix with remaining uterus
• Z90.72Acquired absence of ovaries
• Z90.721Acquired absence of ovaries, unilateral
• Z90.722Acquired absence of ovaries, bilateral
• Z90.79Acquired absence of other genital organ(s)
• Z90.8Acquired absence of other organs
• Z90.81Acquired absence of spleen
• Z90.89Acquired absence of other organs

Z90 MS-DRGs

As the principal diagnosis, the billable codes under Z90 group to these 14 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

• DRG 951 Other Factors Influencing Health Status (13 of 22 codes)
• DRG 742 Uterine and Adnexa Procedures for Non-Malignancy with CC/MCC (6 of 22 codes)
• DRG 743 Uterine and Adnexa Procedures for Non-Malignancy without CC/MCC (6 of 22 codes)
• DRG 760 Menstrual and Other Female Reproductive System Disorders with CC/MCC (6 of 22 codes)
• DRG 761 Menstrual and Other Female Reproductive System Disorders without CC/MCC (6 of 22 codes)
• DRG 124 Other Disorders of the Eye with MCC or Thrombolytic Agent (1 of 22 codes)
• DRG 125 Other Disorders of the Eye without MCC (1 of 22 codes)
• DRG 205 Other Respiratory System Diagnoses with MCC (1 of 22 codes)
• DRG 206 Other Respiratory System Diagnoses without MCC (1 of 22 codes)
• DRG 698 Other Kidney and Urinary Tract Diagnoses with MCC (1 of 22 codes)
• DRG 699 Other Kidney and Urinary Tract Diagnoses with CC (1 of 22 codes)
• DRG 700 Other Kidney and Urinary Tract Diagnoses without CC/MCC (1 of 22 codes)
• DRG 729 Other Male Reproductive System Diagnoses with CC/MCC (1 of 22 codes)
• DRG 730 Other Male Reproductive System Diagnoses without CC/MCC (1 of 22 codes)

Other codes that refer to Z90

Notes on these codes point to Z90.

• M95 Excludes2: acquired absence of limbs and organs (Z89-Z90)
• Z08 Use Additional Code: code to identify any acquired absence of organs (Z90.-)

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.