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ICD-10/S70.322A

S70.322A ICD-10-CM Code: Blister (nonthermal), left thigh, initial encounter

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

  • MS-DRG 606 — MINOR SKIN DISORDERS WITH MCC (MDC 09)
  • MS-DRG 607 — MINOR SKIN DISORDERS WITHOUT MCC (MDC 09)
  • MS-DRG 963 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITH MCC (MDC 24)
  • MS-DRG 964 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITH CC (MDC 24)
  • MS-DRG 965 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITHOUT CC/MCC (MDC 24)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Blister (nonthermal), left thigh, initial encounter is a billable ICD-10-CM diagnosis code (S70.322A).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for S70.322A in the official ICD-10-CM tabular list.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

  • burns and corrosions (T20-T32)
  • frostbite (T33-T34)
  • snake bite (T63.0-)
  • venomous insect bite or sting (T63.4-)

Frequently Asked Questions (FAQ) & Clinical Guidance

Does S70.322A require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category S70.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S70.322A in its code family, with their registry titles.

  • S70.321 — Blister (nonthermal), right thigh
  • S70.321A — Blister (nonthermal), right thigh, initial encounter
  • S70.321D — Blister (nonthermal), right thigh, subsequent encounter
  • S70.321S — Blister (nonthermal), right thigh, sequela
  • S70.322 — Blister (nonthermal), left thigh
  • S70.322D — Blister (nonthermal), left thigh, subsequent encounter
  • S70.322S — Blister (nonthermal), left thigh, sequela
  • S70.329 — Blister (nonthermal), unspecified thigh
  • S70.329A — Blister (nonthermal), unspecified thigh, initial encounter
  • S70.329D — Blister (nonthermal), unspecified thigh, subsequent encounter

View all codes in the S70 family