Coding Tip: Cellulitis and DM Coding
Kim Carrier RHIT, CDIP, CCS, CCS-P
Director of Coding Quality Assurance
AHIMA Approved ICD-10-CM/PCS Trainer
Is Cellulitis always a skin complication of Diabetes Mellitus?
In the Alphabetic Index of ICD-10-CM, when indexing diabetes there is an entry under “with” for skin complications NEC. This has brought up many question over the past year regarding coding of cellulitis in patients that also have a diagnosis of diabetes. Are these two linked by the definition of “with” in ICD-10-CM?
Finally, there is official guidance on this subject.
NO, the link is not assumed when patients have cellulitis and diabetes documented. The physician would need to document the cellulitis as a diabetic skin complication or link the two conditions with verbiage such as “due to”, “associated with” or similar terms. If the documentation is not clear and the coder is unable to determine whether a condition is a diabetic compilation and/or the ICD-10-CM classification does not provide instruction, it would be appropriate to query the physician for clarification.
Even though there is an entry under “with” for skin complication right after the main term of diabetes, there is not an entry for cellulitis. Per the 4Q2017 AHA Coding Clinic, the “with” guideline does not apply to NEC (not elsewhere classified) conditions. Only specific conditions would be linked by these terms. If this were the case, then any skin issue would be considered as a diabetic complication when patients have both a skin condition documented and diabetes. An obvious example of this would be a patient with diabetes and also acne. Most likely the acne is not a complication of the diabetes but of puberty or other skin disorder.
Here’s the definition of “with” from the ICD-10-CM Official Guidelines for Coding and Reporting FY 2018, Pages 12-13:
“With”
The word “with” or “in” should be interpreted to mean “associated with” or “due to” when it appears in a code title, the Alphabetic Index, or an instructional note in the Tabular List. The classification presumes a causal relationship between the two conditions linked by these terms in the Alphabetic Index or Tabular List. These conditions should be coded as related even in the absence of provider documentation explicitly linking them, unless the documentation clearly states the conditions are unrelated or when another guideline exists that specifically requires a documented linkage between two conditions (e.g., sepsis guideline for “acute organ dysfunction that is not clearly associated with the sepsis”). ICD-10-CM Official Guidelines for Coding and Reporting FY 2018 Page 13 of 117
For conditions not specifically linked by these relational terms in the classification or when a guideline requires that a linkage between two conditions be explicitly documented, provider documentation must link the conditions in order to code them as related.
The word “with” in the Alphabetic Index is sequenced immediately following the main term, not in alphabetical order.
Here are some examples of coding cellulitis in patients that also have documented diabetes:
- Patient presents with cellulitis of the right foot and toes. The patient also has a history of type 2 diabetes and is currently using insulin now for the past few years. There is no further link made by the physician of the cellulitis being a complication of or related to the diagnosis of diabetes. In this case, the coder would not code as a skin complication of diabetes. Before the link can be made, the physician would need to be queried for clarification of the link of the two diagnoses.
- Patient presents with cellulitis of the right foot and toes and has documented diabetic foot ulcer at the site and related cellulitis. In this case, the causal link has been made and it would be appropriate to report as a skin complication of diabetes.
- Patient presented with type 1 diabetes having issues with dehydration. They were admitted for observation status due to the fear of the patient developing DKA for IV fluids. During the observation stay, it is noted that the patient has a few areas of severe acne and a dermatology referral was made to help with treatment of this condition. In this case, the coder would not code as a skin complication of diabetes. This is typically not a skin complication associated with diabetes so the coder should not query the physician.
References:
AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS, Fourth Quarter 2017 Page: 100-101
ICD-10-CM Official Guidelines for Coding and Reporting FY 2018 Page: 12-13
Happy Coding!
The information contained in this coding advice is valid at the time of posting. Viewers are encouraged to research subsequent official guidance in the areas associated with the topic as they can change rapidly.
Popular Posts
New Technology Add-On Payments (NTAP) For FY2021 – Part 4
In the previous three parts of this four-part series, we discussed the new ICD-10-CM diagnosis code changes, ICD-10-PCS procedure code changes and FY2021 IPPS changes. In this last Part 4 of the series, we will review the NTAP procedure codes and reimbursement add-on payments for FY2021.
New ICD Codes and IPPS Changes for FY2021 (ICD-10-CM Diagnoses changes) – Part 3
In the previous two parts of this four part series, we discussed the new ICD-10-CM diagnosis code changes and ICD-10-PC procedure code changes. In this session we will review the major IPPS changes for FY2021.
New ICD Codes and IPPS Changes for FY2021 (ICD-10-CM Diagnoses changes) – Part 2
This is Part 2 of a 4 part series on the FY2021 ICD-10 Code and IPPS changes. In this part, the ICD-10-PCS procedure codes are presented. For FY2021 ICD-10-PCS there are 78,115 total codes (FY2020 total was 77,571); 556 new codes (734 new last year in FY2020)…
New ICD Codes and IPPS Changes for FY2021 (ICD-10-CM Diagnoses changes) – Part 1
This is Part 1 of a 4 part series on the FY2021 changes to ICD-10 and the IPPS. In this part, we discuss some of the new ICD-10-CM diagnosis changes. Here is the breakdown: 72,616 total ICD-10-CM codes for FY2021; 490 new codes (2020 had 273 new codes); 58 deleted codes (2020 had 21 deleted codes); 47 revised codes (2020 had 30 revised codes)
Coding Tip: Reporting “Flash” Pulmonary Edema
Acute pulmonary edema is the rapid accumulation of fluid within the tissue and space around the air sacs of the lung (lung interstitium). When this fluid collects in the air sacs in the lungs it is difficult to breathe. Acute pulmonary edema occurs suddenly and is life threatening.
Subscribe to our weekly newsletter
Latest News
New Technology Add-On Payments (NTAP) For FY2021 – Part 4
In the previous three parts of this four-part series, we discussed the new ICD-10-CM diagnosis code changes, ICD-10-PCS procedure code changes and FY2021 IPPS changes. In this last Part 4 of the series, we will review the NTAP procedure codes and reimbursement add-on payments for FY2021.
New ICD Codes and IPPS Changes for FY2021 (ICD-10-CM Diagnoses changes) – Part 3
In the previous two parts of this four part series, we discussed the new ICD-10-CM diagnosis code changes and ICD-10-PC procedure code changes. In this session we will review the major IPPS changes for FY2021.
New ICD Codes and IPPS Changes for FY2021 (ICD-10-CM Diagnoses changes) – Part 2
This is Part 2 of a 4 part series on the FY2021 ICD-10 Code and IPPS changes. In this part, the ICD-10-PCS procedure codes are presented. For FY2021 ICD-10-PCS there are 78,115 total codes (FY2020 total was 77,571); 556 new codes (734 new last year in FY2020)…
New ICD Codes and IPPS Changes for FY2021 (ICD-10-CM Diagnoses changes) – Part 1
This is Part 1 of a 4 part series on the FY2021 changes to ICD-10 and the IPPS. In this part, we discuss some of the new ICD-10-CM diagnosis changes. Here is the breakdown: 72,616 total ICD-10-CM codes for FY2021; 490 new codes (2020 had 273 new codes); 58 deleted codes (2020 had 21 deleted codes); 47 revised codes (2020 had 30 revised codes)
Coding Tip: Reporting “Flash” Pulmonary Edema
Acute pulmonary edema is the rapid accumulation of fluid within the tissue and space around the air sacs of the lung (lung interstitium). When this fluid collects in the air sacs in the lungs it is difficult to breathe. Acute pulmonary edema occurs suddenly and is life threatening.
Client S: $556 increase/record reviewed
“Client S” is a small, not-for-profit, 40 bed micro-hospital in the Southeast. HIA performed a 65-record review this year for Client S and found an opportunity with 15 of them. 9 had an increased reimbursement with a total of $43,228 found.
Coding Tip: Glasgow Coma Scale Coding OCG Update for FY2021
The coma scale codes (R40.2-) can be used in conjunction with traumatic brain injury codes, acute cerebrovascular disease or sequelae of cerebrovascular disease codes. These codes are primarily for use by trauma registries, but they may be used in any setting where this information is collected. The coma scale may also be used to assess the status of the central nervous system for other non-trauma conditions, such as monitoring patients in the intensive care unit regardless of medical condition.
Coding Tip: Cardiac Arrest and Cardiac Shock
In the past, there had been an Excludes1 note at I46.- Cardiac arrest that excluded R57.0, Cardiac shock. HIA had also received a letter from AHA on a case in the past that had stated that only I46.- Cardiac arrest would be coded if both were documented. In addition, the Third Quarter Coding Clinic page 26 had a similar case that asked if both could be coded, and AHA had instructed that only I46.9, cardiac arrest, cause unspecified would be coded if both were documented and that the CDC would be looking at possible revision to the Excludes1 note.
Client X: Let’s Talk Numbers
A higher CMI corresponds to increased consumption of resources and increased cost of patient care, resulting in increased reimbursement to the facility from government and private payers, like CMS. We know that documentation directly impacts coding.
Coding Tip: Endarterectomy During Coronary Artery Bypass
Lately we have seen several cases where the endarterectomy was assigned along with the coronary artery bypass (CABG) procedure when being performed on the same vessel to facilitate the CABG. A coronary artery endarterectomy is not always performed during a CABG procedure, so when it is performed it becomes confusing as to whether to code it separately or not.
Coding Tip: Update – Coding COVID-19 When the Test is Negative
Assign code Z20.828, “Contact with and (suspected) exposure to other viral communicable diseases” for all patients who are tested for COVID-19 and the results are negative, regardless of symptoms, no symptoms, exposure or not as we are in a pandemic.
New ICD-10-PCS Procedure Codes for COVID-19
The Centers for Medicare & Medicaid Services (CMS) announced new procedure codes for treatments of COVID-19 – effective as of August 1, 2020. Among the new codes are Section X New Technology codes for the introduction or infusion of therapeutics including Remdesivir, Sarilumab, Tocilizumab, transfusion of convalescent plasma, as well as introduction of any other or new therapeutic substances for the treatment of COVID-19.
New Rule Helps Medicare ACOs During COVID-19 Pandemic
One common element in many value-based programs is risk adjustment using Hierarchical Condition Categories (HCCs) to create a Risk Adjustment Factor (RAF) score. This method ranks diagnoses into categories that represent conditions with similar cost patterns.
Part 5: Reasons for AKI Denials and Prevention | AKI Series
Why are so many AKI records being denied? It’s hard to give one answer for why so many AKI records are being denied lately, but most appear to be due to the multiple sets of criteria available for use in determining if a patient has AKI, as well as physician documentation. As stated in Part 3 of this series, there are three main criteria/classifications used to diagnose AKI.
Part 4: Is Documentation Present to Report Acute Kidney Injury/Failure? | AKI Series
In previous parts of this series we looked at the definitions of AKI/ARF, causes, coding and sequencing, and the common clinical indicators that patients present with that are diagnosed with this condition. In Part 4, we will look at the documentation that should be present to report the diagnosis without fear of denial, as well as when a query is needed to clarify the diagnosis.
Coding Tip: Z Code Reporting for COVID-19
If the facility does a COVID-19 test, and test is negative, do I need a diagnosis code. The answer is yes, you will report a Z-code. The Z-code depends on the record documentation and circumstances of testing. For any patient receiving a COVID-19 test, if negative, there MUST e a Z-code to describe why the test was taken. (Test negative for COVID-19 and MD does not override negative results).
Part 3: Clinical Indicators for Acute Kidney Injury/Failure | AKI Series
In the first parts of this series we looked at definitions of AKI/ARF, causes, coding and sequencing. In Part 3, we will look at what clinical indicators would possibly be present to support the diagnosis of AKI/ARF.
FY2021 Proposed Rule and Code Changes Highlights
The FY2021 IPPS Proposed Rule is out and here are some highlights from it regarding ICD-10 Code proposals. We will know if these changes are permanent after the public comment period is over on July 10, 2020 and CMS prepares the Final Rule, usually out by August 1.
Part 2: Specificity Coding of Acute Kidney Injury (AKI) and Sequencing | AKI Series
As discussed in Part 1 of this series, AKI/ARF is a common diagnosis that coders see daily. In Part 2, we are going to focus on the different types/specificity of AKI/ARF. We’ll learn what they mean, as well as how to code the diagnosis.
Part 1: What is Acute Kidney Injury (AKI)? | AKI Series
This is part 1 in a series focused on coding of acute kidney injury (AKI) and/or acute renal failure (ARF). AKI/ARF is reported often, but is also one of the most common diagnosis found in denials.
Coding Tip: Covid-19 Diagnosis Coding Common Scenarios
With the proliferation of COVID-19 cases, we thought we would put together a quick reference listing of some of the common scenarios that coders have asked about. As with all coding, coders should follow Official Guidelines for Coding and Reporting and the COVD-19 Frequently Asked Questions document by the AHA.
Reporting Telehealth Services During the COVID-19 Emergency
Effective March 1, Medicare will pay physicians for telehealth services at the same rate as in-person visits for all diagnoses, not just services related to COVID-19. This great for providers whose patients are reluctant to visit the office.
Coding Tip: What is Single Path Coding?
The biggest reasons why some hospital systems are moving to single path coding is to eliminate duplicative processes and to optimize productivity. In addition, costs are reduced when only one coder “touches” the record and completes both types of coding.
Telehealth and the Coronavirus
The US government and public-health officials are urging consumers to utilize telemedicine for remote treatment, fill prescriptions and get medical attention during the new coronavirus pandemic. The goal is to keep people with symptoms at home and to practice social distancing if their condition doesn’t warrant more intensive hospital care.
Coronavirus: Tips for Working from Home
Coronavirus: Tips for working from home. Companies around the world have told their employees to stay home and work remotely. Whether you’re a new to this concept or a work from home veteran, here’s some tips to staying productive from our #HIAfamily.
Part 3: Coder and CDI Communication Example | CDI Series
This is the final part of a three part series in which we address how coders can better interact with Clinical Documentation Improvement (CDI) professionals. In this part, we provide an actual example of an effective communication response to CDI.
Part 2: How Coders Can Address Coding Mismatches | CDI Series
This is part two of a three part series in which we address how coders can better interact with Clinical Documentation Improvement (CDI) professionals. In this part, we discuss mismatches and how to best go about resolving them. In part three we will provide a case example of best practice interaction.
Part 1: How Coders Can Better Interact with CDI Teams | CDI Series
This is part one of a three part series in which we address how coders can better interact with Clinical Documentation Integrity (CDI) professionals. Many times these departments are separate and the remote environment makes it difficult to interact efficiently between the two departments. In part one, we will discuss the history and objectives of CDI so the coder has a better understanding of CDI’s role.
Coding Tip: Coding Diagnoses on Outpatient Encounters
One reason that coders should report chronic conditions (including history and status codes) on outpatient records is the HCC’s—Hierarchical Condition Categories. The quick and easy explanation of what HCC’s are is each HCC is mapped to certain ICD-10-CM codes or code ranges. HCC coding is designed to estimate future health care costs for patients.
