CodingIntel

Medical coding resources for physicians and their staff. CodingIntel was founded by consultant and coding expert Betsy Nicoletti.

  • Become a member
  • E/M Changes for 2021
  • Learn More
    • What is CodingIntel?
    • Membership pricing
    • Free resources
      • Can I Get Paid
      • Nicoletti Notes
      • Everyday Coding Q&A
      • Newsletter Archives
      • NEW! Site map
  • Member Resources
    • NEW! Site map
    • Home
    • Articles
    • Coding Guides
    • Quick Reference Sheets
    • Webinars
  • Coding Education
    • Webinars
    • Courses
    • Specialty resources
    • HCC Coding Guide
    • Order print resources
  • My Account
    • Login
    • Logout
    • Manage Account

HCC diagnosis coding: Can you add a code from the past medical history?

This post describes rules for office/outpatient coding, not facility/DRG rules.

Recently a fellow coder wrote to me about risk adjusted diagnosis coding. She was responding to an article that I wrote in which I stated the conditions listed in the past medical history should not be included on the claim form by the coder. I stated that in order to include the condition on the claim form, there should be documentation in the history of the present illness or the assessment and the plan that the condition was addressed  at the encounter.

She and I were in agreement that we should follow the ICD-10 guideline that states:

“Code all documented conditions that coexist at the time of the encounter and require or affect patient care or treatment.”

Here is her comment:

“However, I am a believer that although the patient is not being seen or treated for the chronic condition or history of condition, they all play a pertinent part in the patient care and overall acuity of the patient.

An example is patient had CVA listed in the PMH and current encounter is for thigh pain without known injury.   There could be a correlation to a thrombosis or blood clot that the physician must consider.   The physician does not document this correlation, however the old CVA could affect treatment or care.  Coding history of CVA code as a secondary would give a clear picture.”

While I agree that  it would give a clearer picture, we need to follow the outpatient ICD-10 guidelines.

Problem lists, and past medical history in electronic health records

But, while it may be relevant to this encounter, without documentation that the clinician was thinking about this past stroke,  I would not add it to the claim form. I wouldn’t assume that the physician/NP/PA was thinking about that in terms of the thigh pain after the injury, even though it is on the problem list. In order for me to use the past history of the stroke on the claim form, I would have had to see that the clinician mentioned it in the history of present illness.

For example, the HPI might say,

“He does have a history of stroke, and with his recent injury is at risk of a clot.” 

Or, the assessment and plan might say,

“I have reassured him that his symptoms are not consistent with a blood clot, and there is no reason to order an ultrasound.” Or, “I think in light of his history of a stroke, we should do further testing to rule out a thrombolytic event.” 

And while I agree with her that the history provides a clearer picture, it is the physician’s job to document a picture.

Hierarchical Condition Categories and MEAT

When I was researching Hierarchical Condition Categories (HCCs) I came across the acronym MEAT.

It stands for:

M–monitoring;
E—evaluating;
A—assessing/ addressing;
T—treatment.

I looked for this in CMS documents and in the ICD-10 guidelines. I didn’t find it specifically, so I suspect that it was a consultant who came up with this acronym. And although I don’t use it in my teaching specifically, I agree with its message. The physician/NP/PA who is providing this service needs to show that a condition “requires or affects patient care or treatment.”

If the condition in question isn’t the presenting problem, the clinician should note that labs were reviewed, history was taken and/or it was considered when developing the assessment and plan. Is not within the scope of my work to make that determination, it is the job of the clinician. If the clinician documented in either the history of present illness or the assessment and plan, then I add that conditioned to the claim form.

Conditions that affect patient care

The example I use most frequently is the patient who presents to urgent care with a bad case of poison ivy.  If the urgent care provider says in the assessment, “I’d like to give her prednisone, but I’m not going to because of her diabetes,” then I add diabetes to the claim form.  The diabetes affected patient care and the clinician documented that it affected patient care.  If the diabetes is listed in the problem list but not mentioned in the encounter for this date of service, I do not add it to the claim form.

Risk adjustment for history of conditions

But would history of a stroke increase the risk score? That is, if the group has risk based contracts, does adding history of stroke increase the risk score for that patient? The answer is no. The diagnosis codes for current stroke and sequelae of a past stroke  (I63, I69) do have HCC weighted scores assigned to him. But past history of the stroke does not. This brings me to a compliance issue in HCC coding.

HCC compliance issues

Compliance Issues
Do not use Use

Patient seen in office, hospital follow up for stroke

I63.- Cerebral infarction

I69.- Sequelae of cerebral infarction
Z86.73 Personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits

Patient seen in office, ED follow up for TIA

G45.- Transient cerebral ischemic attacks and related syndromes

Z86.73 Personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits

Patient seen and noted to have “history of XXX cancer” but no current evidence of disease or current treatment

Code indicating malignant neoplasm, starting with the letter C

Code from category Z85.-, Personal history of malignant neoplasm

Patient seen > 28 days after an acute MI

I20.-, I21.-, I22.- Current MI

I25.2 Old myocardial infarction

Medical groups that are part of Accountable Care Organizations (ACOs) or that have commercial risk based contracts need to assign diagnosis codes carefully.

Additional resources

The CodingIntel Guide to Hierarchical Condition Categories provides a comprehensive list of HCC and Risk Adjusted Diagnosis Coding resources available on CodingIntel.

 

For more about HCCs and Risk adjusted diagnosis coding, Join CodingIntel. Membership includes access to our premium content library of articles, billing guides, quick reference sheets and more, become a member. Already a member? Login

Get Unlimited Access to CodingIntel’s Online Library

Are you a coder, biller, administrator,
office manager or physician?

Learn more about the benefits of
a CodingIntel membership

click here!

Last revised November 6, 2020 - Betsy
Tags: diagnosis coding, HCC, ICD-10, risk adjusted coding

  • About
  • FAQs
  • Terms of Use
  • Privacy Policy
  • Contact

Our mission is to provide accurate, comprehensive, up-to-date coding information, allowing medical practices to increase revenue, decrease coding denials and reduce compliance risk. That's what coding knowledge can do.

In 1988, CodingIntel.com founder Betsy Nicoletti started a Medical Services Organization for a rural hospital, supporting physician practice. She has been a self-employed consultant since 1998. She estimates that in the last 20 years her audience members number over 28,400 at in person events and webinars. She has had 2,500 meetings with clinical providers and reviewed over 43,000 medical notes. She knows what questions need answers and developed this resource to answer those questions. For more about Betsy visit www.betsynicoletti.com.

Copyright 2021, CodingIntel
Privacy Policy