CDI Solutions • Tips & Friendly Reminders • Pressure and Non-pressure Ulcers

Topic: Pressure and Non-pressure Ulcers

Definition

Pressure Ulcers / Injuries

Defined as localized damage to skin and/or underlying soft tissue due to intense or prolonged pressure often associated with immobility and/or absent sensation.

Non-Pressure Ulcers

Chronic ulcers with an etiology other than pressure (aka, venous, arterial, diabetic, etc.)

Skin Failure

Refers to skin breakdown due to various causes. Acute skin failure describes skin loss in association with hemodynamic instability and/or organ system compromised in critically ill patients.

Diagnostic Criteria — Pressure Ulcers / Injuries

Pressure Injury
Deep Tissue
(DTPI)
Defined as a localized area of persistent non-blanchable deep red, maroon, or purple discoloration. The wound may evolve rapidly, revealing the true extent of underlying tissue damage, or it may resolve without resulting in tissue loss.
Stage
1
Non-blanchable erythema of intact skin due to damage to capillaries; there can be associated pain to area.
Stage
2
Partial thickness (epidermal) skin loss; no evidence of slough or bruising noted and exposing the vascular dermis. No subcutaneous (SQ) fat or deeper tissue is exposed. Stage 2 should not be used to describe skin tears, tape burn, perineal dermatitis, maceration or excoriation.
Stage
3
Full thickness skin loss; SQ tissue is likely seen and exposed, however, bone, muscle and tendon are not exposed. Slough may be noted and there could be undermining and/or tunneling.
Stage
4
Full thickness skin and tissue loss with exposed or palpable fascia, ligament, cartilage, bone, tendon or muscle; slough or eschar may be present and there is frequently noted to be undermining and/or tunneling.
Stage
Unstageable
Full thickness tissue loss that is completely obscured by slough or eschar.
Special Category
Kennedy Terminal Ulcer
Pressure ulcer that develops quickly during the end-of-life related to multi-organ failure.

Coding Considerations

L97 code grouping is for the non-pressure ulcers of the lower limbs.

Instructional note to "code first" any associated underlying condition such as gangrene, atherosclerosis, chronic venous hypertension, diabetic ulcer, post thrombotic ulcer or varicose ulcer.

Excludes 2 note indicates pressure ulcers (L89), skin infections (L00-L08), and specific infections (A00-B99) can also be reported.

Unstageable vs. Unspecified

Unstageable — L89.--0

Assigned only when the documentation supports unstageable.

Unspecified — L89.--9

Used when no stage is documented.

⚠ DTPI or unstageable revealing a stage:

If a DTPI or an unstageable pressure ulcer is documented by the provider with location, and after debridement or opening a stage is revealed and documented, assign only one code for the pressure ulcer with stage.

Official Guidelines for Coding and Reporting

Section I.C.12.a.1

Allows for assignment of as many codes from L89 as needed to identify all pressure ulcers that patient has during hospital admission.

Section I.C.12.a.3

Assignment of pressure ulcer stage should be guided by clinical documentation of the stage or documentation of the terms found in the alphabetic index.

Section I.B.14

States that the code assignment reflecting the depth of non-pressure ulcers and stage of pressure ulcers may be based on medical record documentation from clinicians who are not the patient's provider.

"Clinicians" other than the patient's provider refer to a healthcare professional that is permitted based on regulatory requirements or internal hospital policies to document in the patient's official medical record.

The associated diagnosis, location, and present on admission (POA) status MUST be documented by the provider.

Section I.B.13

"When laterality is not documented by the patient's provider, code assignment for the affected side may be based on medical record documentation from other clinicians."

Section I.C.12.a.2

Assignment of the code for unstageable pressure ulcer (L89. ----0) should be based on clinical documentation. These codes are used for pressure ulcers whose stage cannot be clinically determined (e.g., the ulcer is covered by eschar or has been treated with skin or muscle graft). This code should not be confused with the codes for unspecified stage (L89. --9). When there is no documentation about the stage of the pressure ulcer, assign the appropriate code for an unspecified stage (L89. --9).

Section I.C.12.a.4 and 5

Instructs that no code is assigned if pressure ulcer is completely healed. Pressure ulcers described as healing should be assigned to the appropriate pressure ulcer stage.

📚 Coding Clinics to Consider
AHA Coding Clinic · 2017 Q4, p. 109
Unstageable Pressure Ulcer
AHA Coding Clinic · 2018 Q2, p. 21
Kennedy Terminal Ulcer
AHA Coding Clinic · 2018 Q3, p. 3
Necrotic Pressure Ulcer of Heel with Diabetic Peripheral Vascular Disease and Neuropathy
AHA Coding Clinic · 2021 Q1, p. 24
Evolving Deep Tissue Injury
AHA Coding Clinic · 2021 Q1, p. 7
Traumatic Laceration Evolving to Ulceration of Diabetic Patient
AHA Coding Clinic · 2022 Q2, p. 8
Deep Tissue Pressure Injury Revealed to be Stage IV Pressure Ulcer
AHA Coding Clinic · 2022 Q2, p. 7
Pressure Injury of Penile Mucosal Membrane and Pressure Injury of Mucosal Lip

CDI Practice Considerations

Key elements of provider documentation include presence, location, and POA status of pressure ulcer, but a corresponding stage can be taken from other clinicians as defined by the hospital policies.
It is essential to document the present-on-admission status, as Stage 3 and Stage 4 pressure ulcers that are not POA are included in PSI-3. Kennedy ulcer is assigned L89 and is also included in PSI 3 if not present-on-admission and full thickness stage 3 or 4. Skin Failure is not classified as a PSI 3.
Stage 3 pressure ulcers are non-CCs but assigned to HCC 382. Stage 3 and 4 pressure ulcers are MCCs and included in HCCs 379 and 381.
Follow DTIs and make sure the location and POA status is noted in case they reveal to stage 3 or 4 pressure injury.
For query compliance standards on a POA status of pressure injury, make sure to include unable to determine as an option.
If a patient is admitted with a pressure ulcer that is POA at a specific stage and the ulcer progresses to a higher stage during the hospitalization, assign two separate codes. The first code should reflect the ulcer site and stage documented as POA, and the second code should reflect the same ulcer site at the highest stage documented during the hospital stay.

Query Opportunity

1
If the provider's documentation conflicts with documentation from other clinicians, such as nursing staff or wound care specialists, a provider query should be issued to clarify the conflicting information. If a provider uses clinical terms not found in the alphabetic index, a query may need to be sent.
2
If the POA status of the pressure ulcer is unclear, a query may need to be sent.
3
If a wound care nurse or RN has documented a pressure ulcer and location, a query may need to be sent to confirm the presence and location.

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