2027 ICD-10-CM Diagnosis Code Z59.19Other inadequate housing
Z59.19 is a billable ICD-10-CM diagnosis code for other inadequate housing. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Socioeconomic/psychosocial factors.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for Z59.19.
Present on Admission (POA)Billing
Z59.19 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Persons with potential health hazards related to socioeconomic and psychosocial circumstances (Z55-Z65).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Adequacy of living space - finding
- Code violation in residence
- Crowded living space
- Damp in house
- Details of local facilities and amenities - finding
- Difficulty storing food hygienically
- Dirty environment
- Dirty living conditions
- Does not store food hygienically
- Environment contains allergens
- Environment contains infectious agent
- Environmental foul odor
- Environmental infestation of insects
- Environmental safety problem
- Finding related to ability to store food hygienically
- Hazards in the home
- Home subject to flooding
- House fumigated
- House in poor repair
- House infested
- House liable to vandalism
- Housing contains exposed wiring
- Housing contains structural barriers to movement
- Housing contains unsafe appliance
- Housing contains unsafe equipment
- Housing structurally unsound
- Housing unsuited to needs
- Improper food storage
- Inadequate carbon monoxide detection equipment in residence
- Inadequate cooking facilities
- Inadequate equipment for safe food storage in residence
- Inadequate exercise space
- Inadequate fire extinguishing equipment in residence
- Inadequate food preparation equipment in residence
- Inadequate garbage disposal
- Inadequate laundry facilities
- Inadequate play space
- Inadequate residential safety device
- Inadequate safety equipment
- Inadequate sanitation
- Inadequate sewage disposal
- Inadequate smoke detection equipment in residence
- Infestation in residence
- Insufficient means of residential entrance
- Insufficient means of residential exit
- Lack of functioning sink in residence
- Lack of functioning toilet in residence
- Lack of space for privacy in accommodation
- Lack of space in house
- Lives in damp conditions
- Lives in squalid conditions
- Living in housing with technical defects
- Living in residence with no sanitation
- Living in residence with poor sanitation
- Living in tent
- No indoor toilet
- Obstructed means of residential entrance
- Obstructed means of residential exit
- Opportunity for privacy in accommodation - finding
- Overcrowded in house
- Penetrating damp in home
- Problem with condensation
- Residence does not meet functional needs
- Residence has external architectural barrier
- Residence inadequately weatherproofed
- Rising damp in home
- Shower or tub on ground level not available
- State of repair of house - finding
- Substandard housing caused by structural insufficiency
- Unable to store food hygienically
- Unsafe floor covering
- Unsafe storage of dangerous objects
- Unsafe storage of dangerous substances
- Wet patches on wall in home
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Z59.19: its own notes plus those printed at Z59.1, Z59, and Chapter 21. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Pest infestation
- Poor housing weatherization
- Restriction of space
- Technical defects in home preventing adequate care
- Unsatisfactory surroundings
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.
- problems related to the natural and physical environment (Z77.1-)
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.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name Z59.19, its category, or a range that includes it.
Excludes2 2
These codes carry an Excludes2 note naming Z59.19: its condition is not part of those codes, and both may be reported when the patient has both.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
technical defects in home Z59.19
space Z59.19
specified NEC Z59.19
pest Z59.19
housing weatherization Z59.19
of housing space Z59.19
surroundings Z59.19
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Code History & ChangesHistory
Replacement Z59.19 replaces the following previously assigned code(s):
- Z59.1 - Inadequate housing
Questions About Z59.19Overview
What is the ICD-10 code for other inadequate housing?
The ICD-10-CM code for other inadequate housing is Z59.19 (sometimes written as Z5919). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Z59.19 (Inadequate housing) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other inadequate housing on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Z59.19 group to?
On inpatient claims, other inadequate housing 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 Z59.19 be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because other inadequate housing describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
Is Z59.19 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 other inadequate housing on inpatient claims. The code appears in the Persons with potential health hazards related to socioeconomic and psychosocial circumstances (Z55-Z65) range of the CMS exempt list.
