L98.494 Non-pressure chronic ulcer of skin of other sites with necrosis of bone

Billable ICD-10-CM code, FY2026.

Applies from L98.4 Non-pressure chronic ulcer of skin, not elsewhere classified

Applicable to

• Chronic ulcer of skin NOS
• Tropical ulcer NOS
• Ulcer of skin NOS

Excludes2 (not included here)

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

Applies from L98.49 Non-pressure chronic ulcer of skin of other sites

Applicable to

• Non-pressure chronic ulcer of skin NOS

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.

Approximate ICD-9-CM (GEMs)

• 707.8 Chronic ulcer of other specified sites (approximate)

Code annotations containing back-references to L98.494

Back-references to L98.49

• Use Additional: E08.622 Diabetes mellitus due to underlying condition with other skin ulcer ("code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)")
• Use Additional: E09.622 Drug or chemical induced diabetes mellitus with other skin ulcer ("code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)")
• Use Additional: E10.622 Type 1 diabetes mellitus with other skin ulcer ("code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)")
• Use Additional: E11.622 Type 2 diabetes mellitus with other skin ulcer ("code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)")
• Use Additional: E13.622 Other specified diabetes mellitus with other skin ulcer ("code to identify site of ulcer (L97.1-L97.9, L98.41-L98.49)")
• Use Additional: I70.25 Atherosclerosis of native arteries of other extremities with ulceration ("code to identify the severity of the ulcer (L98.49-)")
• Use Additional: I70.26 Atherosclerosis of native arteries of extremities with gangrene ("code to identify the severity of any ulcer (L97.-, L98.49-), if applicable")
• Use Additional: I70.35 Atherosclerosis of unspecified type of bypass graft(s) of other extremity with ulceration ("code to identify severity of ulcer (L98.49-)")
• Use Additional: I70.36 Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene ("code to identify the severity of any ulcer (L97.-, L98.49-), if applicable")
• Use Additional: I70.45 Atherosclerosis of autologous vein bypass graft(s) of other extremity with ulceration ("code to identify severity of ulcer (L98.49)")
• Use Additional: I70.46 Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene ("code to identify the severity of any ulcer (L97.-, L98.49-), if applicable")
• Use Additional: I70.55 Atherosclerosis of nonautologous biological bypass graft(s) of other extremity with ulceration ("code to identify severity of ulcer (L98.49)")
• Use Additional: I70.56 Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene ("code to identify the severity of any ulcer (L97.-, L98.49-), if applicable")
• Use Additional: I70.65 Atherosclerosis of nonbiological bypass graft(s) of other extremity with ulceration ("code to identify severity of ulcer (L98.49)")
• Use Additional: I70.66 Atherosclerosis of nonbiological bypass graft(s) of the extremities with gangrene ("code to identify the severity of any ulcer (L97.-, L98.49-), if applicable")
• Use Additional: I70.75 Atherosclerosis of other type of bypass graft(s) of other extremity with ulceration ("code to identify severity of ulcer (L98.49)")
• Use Additional: I70.76 Atherosclerosis of other type of bypass graft(s) of the extremities with gangrene ("code to identify the severity of any ulcer (L97.-, L98.49-), if applicable")

Back-references to L98.4

• Use Additional: T65.84 Toxic effect of xylazine ("non-pressure chronic ulcer of skin, not elsewhere classified (L98.4-)")

Diagnosis Index entries for L98.494

• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › skin (atrophic) (chronic) (neurogenic) (non-healing) (perforating) (pyogenic) (trophic) (tropical) › specified site NEC › with › bone necrosis

Nearby codes

• L98.479 Non-pressure chronic ulcer of groin with unspecified severity
• L98.49 Non-pressure chronic ulcer of skin of other sites
• L98.491 Non-pressure chronic ulcer of skin of other sites limited to breakdown of skin
• L98.492 Non-pressure chronic ulcer of skin of other sites with fat layer exposed
• L98.493 Non-pressure chronic ulcer of skin of other sites with necrosis of muscle
• L98.494 Non-pressure chronic ulcer of skin of other sites with necrosis of bone (this code)
• L98.495 Non-pressure chronic ulcer of skin of other sites with muscle involvement without evidence of necrosis
• L98.496 Non-pressure chronic ulcer of skin of other sites with bone involvement without evidence of necrosis
• L98.498 Non-pressure chronic ulcer of skin of other sites with other specified severity
• L98.499 Non-pressure chronic ulcer of skin of other sites with unspecified severity
• L98.A Non-pressure chronic ulcer of upper limb, not elsewhere classified