2027 ICD-10-CM Diagnosis Code Z71.51Drug abuse counseling and surveillance of drug abuser

ICD-10-CM Codes›Z00–Z99›Z69-Z76›Z71

ICD-10-CM Z71.51
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z71.51 is a billable ICD-10-CM diagnosis code for drug abuse counseling and surveillance of drug abuser. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 951. The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. Coders also document this condition as substance misuse clinical management plan agreed. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified encounters and counseling.

Code Identity

ICD-10-CM Code
Z71.51
Billable Status
Yes — Valid for Submission
Code Describes
Drug abuse counseling and surveillance of drug abuser
Short Description
Drug abuse counseling and surveillance of drug abuser
Same as the full description in the CMS dataset.
Parent Code
Z71.5
Drug abuse counseling and surveillance

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ69-Z76Persons encountering health services in other circumstances
CategoryZ71Persons encountering health services for other counseling and medical advice, not elsewhere classified
This CodeZ71.51Drug abuse counseling and surveillance of drug abuser

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z71.51.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Present on Admission (POA)Billing

Z71.51 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Persons encountering health services in other circumstances (Z69-Z76).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Substance misuse clinical management plan agreed
  • Substance misuse monitoring status

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z71.51: its own notes plus those printed at Z71.5, Z71, 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.

From Z71 Persons encountering health services for other counseling and medical advice, not elsewhere classified applies to 19 codes
  • contraceptive or procreation counseling (Z30-Z31)
  • sex counseling (Z70.-)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Z71.5 Drug abuse counseling and surveillance applies to 2 codes

Notes

General instructions on how these codes are used.

From Chapter 21 (Z00-Z99) Factors influencing health status and contact with health services applies to 1,425 codes
  • 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.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC012
Other specified encounters and counseling
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Drug Use and Addiction

Drugs are chemical substances that can change how your body and mind work. They include prescription medicines, over-the-counter medicines, alcohol, tobacco, and illegal drugs.

The full article covers:

  • What are drugs?
  • What is drug use?
  • What is drug addiction?
  • Does everyone who takes drugs become addicted?
  • Who is at risk for drug addiction?
  • What are the signs that someone has a drug problem?
  • What are the treatments for drug addiction?
  • Can drug use and addiction be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z71.51 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V65.42 Counslng sbstn use abuse
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z71.51Overview

What is the ICD-10 code for drug abuse counseling and surveillance of drug abuser?

The ICD-10-CM code for drug abuse counseling and surveillance of drug abuser is Z71.51 (sometimes written as Z7151). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Z71.51 (Drug abuse counseling and surveillance) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report drug abuse counseling and surveillance of drug abuser on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Z71.51 group to?

On inpatient claims, drug abuse counseling and surveillance of drug abuser maps to MS-DRG 951 (other Factors Influencing Health Status), which carries a relative weight of 0.5574. Higher weights mean higher Medicare reimbursement.

Can Z71.51 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because drug abuse counseling and surveillance of drug abuser describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z71.51 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for drug abuse counseling and surveillance of drug abuser on inpatient claims. The code appears in the Persons encountering health services in other circumstances (Z69-Z76) range of the CMS exempt list.