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Question: I’m reviewing an emergency department (ED) visit where the provider documents that the patient is experiencing food insecurity and unstable housing. The assessment includes social stressors affecting diabetes management, but there is no clear plan for intervention beyond referral to community resources. I know I can use social determinants of health (SDOH) codes from category Z55-Z65 in some cases, but I’m not sure when they are actually reportable. Should I assign SDOH codes whenever a social issue is mentioned in the note, or are there specific documentation requirements that must be met before I can report them?

How do I determine when SDOH codes are appropriate, and what should I look for in the documentation to avoid overcoding or undercoding these social risk factors?

South Carolina Subscriber

Answer: When you are coding SDOH, the key issue is not whether a social factor is mentioned in the notes, but whether it meets ICD-10-CM reporting criteria as a documented, clinically relevant condition.

According to the ICD-10-CM Official Guidelines, you can report codes from the “Persons with potential health hazards related to socioeconomic and psychosocial circumstances (Z55-Z65)” code set when the documentation clearly supports that the condition is being addressed, has an impact on the patient’s health, or is relevant to the encounter.

In your scenario, the provider documents food insecurity and unstable housing and connects these factors to the patient’s ability to manage diabetes. That link is critical. When the documentation shows that the social condition is affecting treatment, management, or health status, you can report the appropriate Z codes, such as:

• Z59.41 (Food insecurity)
• Z59.10 (Unspecified housing instability)

You can use additional Z codes from Z55-Z65 as applicable based on documentation.

However, you should not assign SDOH Z codes in the following situations:

• The social issue is only mentioned in passing without clinical relevance
• The documentation reflects screening without any identified problem
• The provider does not confirm or assess the condition as active or impacting care
• The information comes solely from patient intake forms without provider acknowledgment

The Centers for Medicare & Medicaid Services (CMS) and AHA Coding Clinic^® for ICD-10-CM and ICD-10-PCS guidance emphasizes that provider documentation in the medical record should support Z codes, not solely patient-reported questionnaires or external screening tools, unless incorporated into the provider’s assessment.

A common compliance pitfall is overcoding SDOH simply because it appears on a social history intake screen. If the provider does not recognize, assess, or incorporate the condition into the encounter, you should generally not code it.

On the other hand, undercoding occurs when coders ignore clearly documented social barriers that affect care planning, such as missed medication doses due to an inability to afford prescriptions or a lack of stable housing affecting disease management.

As you code these encounters, focus on three things:

• Is the SDOH condition documented by the provider?
• Is the condition clinically relevant to the encounter or management of the patient’s other illnesses/injuries?
• Is there evidence that the condition impacts health status, treatment, or resource use?

If the answer is yes to any of the above, you may report the appropriate Z codes when documentation supports that the condition is documented by the provider and is clinically relevant to the encounter or impacts the patient’s health status, treatment, or resource utilization. If the documentation is unclear, you may need to query the provider for clarification rather than assume reportability.

The key takeaway for you is that SDOH coding is not about listing social issues; it is about accurately capturing conditions that are documented as affecting the patient’s health or care in the current encounter.

Suzanne Burmeister, BA, MPhil, Medical Writer and Editor