2027 ICD-10-CM Diagnosis Code Z53.9Procedure and treatment not carried out, unspecified reason
Z53.9 is a billable ICD-10-CM diagnosis code for procedure and treatment not carried out, unspecified reason. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 795, 951. The code is not accepted as a principal diagnosis by the Medicare Code Editor. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified status.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for Z53.9.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- 360 degree sweep of cervix not performed
- Active surveillance of prostate cancer not done
- Adult not examined
- Allergy testing not done
- Antenatal blood group screening not done
- Antenatal sickle screening not done
- Antenatal syphilis screening not done
- Antibody screen not done
- Asthma action plan not done
- Auditory/vestibular test not done
- Autopsy waived
- Block dissection of cervical lymph nodes not done
- Blood pressure not taken
- Body mass index follow-up planning not done
- Body mass index measurement not done
- Bone density screening not done
- Bowel preparation not done
- Breast cancer screening not done
- Canceled operative procedure
- Cardiac function test not done
- Cardiopulmonary resuscitation not attempted
- Cardiovascular system not examined
- Cell phenotyping not performed
- Cervical cancer screening not done
- Chemotherapy not done
- Child examination at 10 days with explicit context
- Child examination at birth with explicit context
- Child not examined
- Child not examined at 10 days
- Child not examined at birth
- Colorectal cancer screening not done
- Counseling about firearm safety not done
- Counseling about opioid safety not done
- CSF chemistry - not tested
- CSF: not examined
- Cytogenetic study not performed
- Delay of chemotherapy
- Delay of drug therapy
- Delayed hypersensitivity skin test for histoplasmin not done
- Depression screening not done
- Determination of pattern of resistance to antiviral agent not done
- Diabetes mellitus screening not done
- Diabetic education not done
- Diabetic foot examination not done
- Diabetic retinal eye exam not done
- Discharge from hospital canceled
- Domestic abuse not discussed
- Drug discontinued - reason unknown
- Drug not collected - no reason
- Drug not collected-lost script
- Drugs not issued
- Drugs not taken/completed
- ECG not done
- Endoscopy not carried out
- ENT examination not performed
- Exercise tolerance test not done
- Failed encounter - message left on answer machine
- Failed encounter - message left with household member
- Failed encounter - message left with work place
- Failed encounter - no answer when rang back
- Failed encounter - phone number unobtainable
- Failed encounter - practitioner access denied
- Fall risk assessment not done
- Feces not examined
- Finding of serum tumor marker level
- General examination not done
- Genetic counseling not done
- GIT not examined
- GU system not examined
- Heart failure education not done
- Helicobacter not tested
- Hematology test request - not done
- Hemoglobin A1C test not done
- Hemoglobin not estimated
- Human anti-D immunoglobulin not administered
- Human immunodeficiency virus screening not done
- Hyperlipidemia screening test not done
- Hypersensitivity skin test not done
- Hypertension monitoring check not done
- Hypertension monitoring status
- Immunophenotypic analysis not done
- Kidney biopsy not done
- Kveim test not done
- Laboratory test requested - not done
- Lung function testing not done
- Lung volume test not done
- Mantoux test not done
- Medication education not done
- Medication not administered
- Metabolic function not tested
- Missed dose
- Multidisciplinary team falls assessment defaulted
- Musculoskeletal test not done
- Nervous system not examined
- Neurological diagnostic procedure - not done
- No antenatal care
- No anti-cancer treatment - advanced stage cancer
- No history of procedure
- No stain applied
- Non-surgical biopsy not done
- Not suitable for procedure
- Operation abandoned
- Operation not completed
- Operative procedure canceled after time of induction of anesthesia
- Operative procedure canceled before anesthesia start time
- Operative procedure canceled before time of induction of anesthesia
- Orthopedic exam. not done
- Osteoporosis risk assessment defaulted
- Patient assessment for procedure not done
- Patient died before anti-cancer treatment
- Patient not examined
- Peak expiratory flow not done
- Plain X-ray not done
- Postnatal depression not discussed
- Previously initiated dental therapy not completed
- Primary health care team falls assessment defaulted
- Procedure discontinued by doctor
- Procedure discontinued by healthcare professional
- Procedure not done
- Procedure not ordered
- Radiation therapy not done
- Radionuclide brain study delayed
- Reason for no specific anti-cancer treatment
- Reasons for treatment
- Referral to smoking cessation assistance not done
- Respiratory flow rate not measured
- Respiratory system not examined
- Retinae not examined
- Robot assisted laparoscopic cholecystectomy not completed
- Screening for posttraumatic stress disorder not done
- Serum metabolic panel not done
- Serum tumor marker stage SX
- Shuttle walking test not done
- Special cardiovascular system test not done
- Special ENT procedure not done
- Special female test not done
- Special GIT test not done
- Special male test not done
- Special urinary test not done
- Spirometry not done
- Susceptibility skin test not done
- Tobacco cessation education not done
- Tobacco usage screening not done
- Urine bacteria test not done
- Urine blood test not done
- Urine glucose test not done
- Urine ketone test not done
- Urine leukocyte test not done
- Urine not examined
- Urine pH test not done
- Urine protein test not done
- Urine urobilinogen not tested
- Visual testing not done
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Z53.9: its own notes plus those printed at block Z40-Z53 and Chapter 21. A note printed at a category, block or chapter applies to every code under it.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Notes
General instructions on how these codes are used.
- Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
- (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
- (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
not done Z53.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Convert Z53.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Z53.9Overview
What is the ICD-10 code for procedure and treatment not carried out, unspecified reason?
The ICD-10-CM code for procedure and treatment not carried out, unspecified reason is Z53.9 (sometimes written as Z539). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Z53.9 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report procedure and treatment not carried out, unspecified reason on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Z53.9 group to?
On inpatient claims, procedure and treatment not carried out, unspecified reason maps to MS-DRG 951, 795, with relative weights from 0.2022 to 0.5574 depending on complications. Higher weights mean higher Medicare reimbursement.
Can Z53.9 be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because procedure and treatment not carried out, unspecified reason describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
What is the ICD-9 equivalent of Z53.9?
Under the General Equivalence Mappings, procedure and treatment not carried out, unspecified reason converts to ICD-9-CM V64.3 (no proc for reasons NEC). The mapping is approximate, so confirm the match fits the documentation.
