L98.A394 Non-pressure chronic ulcer of unspecified hand with necrosis of bone

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from L98.A Non-pressure chronic ulcer of upper limb, not elsewhere classified

Applicable to

• Chronic ulcer of upper limb NOS
• Non-healing ulcer of upper limb
• Ulcer of upper limb NEC

Excludes2 (not included here)

• gangrene (I96)
• pressure ulcer (pressure area) (L89.-)
• skin infections (L00-L08)
• specific infections classified to A00-B99
• ulcer of lower limb NEC (L97.-)
• varicose ulcer (I83.0-I83.93)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 380 — Chronic Ulcer of Skin, Except Pressure, Through to Bone or Muscle
• CMS-HCC V22: HCC 161 — Chronic Ulcer of Skin, Except Pressure
• RxHCC V08: HCC 311 — Chronic Ulcer of Skin, Except Pressure
• ESRD V24: HCC 161

MS-DRG index

Defines the logic of DRG(s) 573-575 in MDC 09.

Medicare Code Edits (MCE v43.1 (April 2026))

• Unspecified code (laterality): Unspecified codes for which a more specific code identifying laterality (right, left, bilateral) exists within the same code family.

Diagnosis Index entries for L98.A394

• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › hand › with › bone necrosis

Nearby codes

• L98.A329 Non-pressure chronic ulcer of left hand with unspecified severity
• L98.A39 Non-pressure chronic ulcer of unspecified hand
• L98.A391 Non-pressure chronic ulcer of unspecified hand limited to breakdown of skin
• L98.A392 Non-pressure chronic ulcer of unspecified hand with fat layer exposed
• L98.A393 Non-pressure chronic ulcer of unspecified hand with necrosis of muscle
• L98.A394 Non-pressure chronic ulcer of unspecified hand with necrosis of bone (this code)
• L98.A395 Non-pressure chronic ulcer of unspecified hand with muscle involvement without evidence of necrosis
• L98.A396 Non-pressure chronic ulcer of unspecified hand with bone involvement without evidence of necrosis
• L98.A398 Non-pressure chronic ulcer of unspecified hand with other specified severity
• L98.A399 Non-pressure chronic ulcer of unspecified hand with unspecified severity
• L98.5 Mucinosis of the skin