E08.622 ICD-10-CM Code: Diabetes mellitus due to underlying condition with other skin ulcer
E08.622 maps to CMS-HCC V28 HCCs 37 and 383. Source-labeled RAF references are available. Confirm the documented diagnosis and applicable coding requirements. MEAT criteria · RAF Calculator · HCC coding software
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FY 2026 Apr update / Endocrine, nutritional and metabolic diseases (E00-E89) / Diabetes mellitus (E08-E13)
E08.622
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceDiabetes mellitus due to underlying condition with other skin ulcer
Diabetes caused by another medical condition that results in an open sore or ulcer on the skin in areas other than the foot.
Buddy Insight
Diabetes mellitus due to an underlying condition with other skin ulcer represents non-foot skin ulceration caused by secondary diabetes, occurring on the lower leg, trunk, or other body sites.
CMS-HCC V28
MappedHCC 37
Coefficient HCC 37: 0.166 (Community Non-Dual Aged (CNA)); HCC 383: 0.646 (Community Non-Dual Aged (CNA))
+ HCC 383
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
MappedHCC 020
Code-level coefficient reference
ESRD/PACE
MappedHCC 18
Code-level coefficient reference
+ HCC 161
RXHCC
MappedHCC 30
Code-level coefficient reference
+ HCC 311
Code Book Path
Inclusion Terms
OfficialNo inclusion terms are included in this display for E08.622. Check the code and parent instructions in the Code Book.
Excludes 2
OfficialNo Excludes 2 notes are included in this display for E08.622. Check the code and parent instructions in the Code Book.
Related Codes
Includes
OfficialNo Includes notes are included in this display for E08.622. Check the code and parent instructions in the Code Book.
Excludes 1
Official- transitory endocrine and metabolic disorders specific to newborn (P70-P74)Inherited from E00-E89, E08
- drug or chemical induced diabetes mellitus (E09.-)Inherited from E00-E89, E08
- gestational diabetes (O24.4-)Inherited from E00-E89, E08
- neonatal diabetes mellitus (P70.2)Inherited from E00-E89, E08
- postpancreatectomy diabetes mellitus (E13.-)Inherited from E00-E89, E08
- postprocedural diabetes mellitus (E13.-)Inherited from E00-E89, E08
- secondary diabetes mellitus NEC (E13.-)Inherited from E00-E89, E08
- type 1 diabetes mellitus (E10.-)Inherited from E00-E89, E08
- type 2 diabetes mellitus (E11.-)Inherited from E00-E89, E08
Code First
Official- the underlying condition, such as:Inherited from E08
- congenital rubella (P35.0)Inherited from E08
- Cushing's syndrome (E24.-)Inherited from E08
- cystic fibrosis (E84.-)Inherited from E08
- malignant neoplasm (C00-C96)Inherited from E08
- malnutrition (E40-E46)Inherited from E08
- pancreatitis and other diseases of the pancreas (K85-K86.-)Inherited from E08
Use Additional
Official- code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)
- code to identify control using:Inherited from E08
- injectable non-insulin antidiabetic drugs (Z79.85)Inherited from E08
- insulin (Z79.4)Inherited from E08
- oral antidiabetic drugs (Z79.84)Inherited from E08
- oral hypoglycemic drugs (Z79.84)Inherited from E08
Code Also
OfficialNo Code Also instructions are included in this display for E08.622. Check the code and parent instructions in the Code Book.
Buddy Documentation Tip
MEAT Support
Audit Caution
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is E08.622 an HCC code?
Yes. E08.622 (Diabetes mellitus due to underlying condition with other skin ulcer) maps to HCC 37, Diabetes with Chronic Complications and HCC 383, Chronic Ulcer of Skin, Except Pressure, Not Specified as Through to Bone or Muscle under the CMS-HCC V28 risk adjustment model, with source-labeled community non-dual aged reference coefficients HCC 37 0.166 and HCC 383 0.646. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes. It is billable for payment year 2026.
Coder answer: E08.622 is billable and maps to V28 HCC 37, Diabetes with Chronic Complications and HCC 383, Chronic Ulcer of Skin, Except Pressure, Not Specified as Through to Bone or Muscle. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.
- Code
- E08.622
- Description
- Diabetes mellitus due to underlying condition with other skin ulcer
- HCC (V28)
- HCC 37 — Diabetes with Chronic Complications; HCC 383 — Chronic Ulcer of Skin, Except Pressure, Not Specified as Through to Bone or Muscle
- RAF reference coefficient
- HCC 37: 0.166; HCC 383: 0.646
- Billable
- Yes
- Payment year
- 2026
HCC Category Mapping
These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.
Work E08.622 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →
MEAT review for E08.622
For E08.622, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule.
- MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
- EEvaluate: test results, medication response, or physical findings reviewed by the provider
- AAssess: explicit mention in the assessment or plan with acknowledgment of status
- TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis
Coder workflow notes
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What This Code Means
E08.622 is the ICD-10-CM diagnosis code for diabetes mellitus due to underlying condition with other skin ulcer. Diabetes caused by another medical condition that results in an open sore or ulcer on the skin in areas other than the foot. E08.622 sits in the ICD-10-CM chapter for endocrine, nutritional and metabolic diseases (e00-e89), within the section covering diabetes mellitus (e08-e13).
Under the CMS-HCC V28 risk adjustment model, E08.622 maps to Diabetes with Chronic Complications (HCC 37) with a source-labeled community, non-dual, aged reference coefficient of 0.166. For CY2026 non-PACE Medicare Advantage, CMS uses 100% of the 2024 CMS-HCC model (V28). PACE uses a separate model blend. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes.
Specify the anatomical location of the skin ulcer in documentation. For E08.622, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for E08.622 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Specify the anatomical location of the skin ulcer in documentation
- •Use additional codes to indicate ulcer depth, severity, and presence of infection
Clinical Significance
Diabetes mellitus due to an underlying condition with other skin ulcer represents non-foot skin ulceration caused by secondary diabetes, occurring on the lower leg, trunk, or other body sites. These ulcers result from the same pathophysiologic mechanisms as foot ulcers — impaired microvascular circulation, delayed wound healing from glycosylation of structural proteins, and immune dysfunction. Non-foot diabetic ulcers, while less common, carry similar healing challenges and infection risk.
Documentation Requirements
- ✓Document the underlying condition causing diabetes, the ulcer location (non-foot), size, depth, presence of infection, and wound characteristics.
- ✓Use additional codes (L97.x or L98.x) to specify the exact anatomic site, laterality, and severity.
- ✓Record wound care treatment plan and any contributing factors such as venous insufficiency or immobility.