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T22.70XA ICD-10-CM Code: Corrosion of third degree of shoulder and upper limb, except wrist and hand, unspecified site, initial encounter

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

Coding at a Glance

7th character
Required — see the character table on this page
Tabular directives
3 inclusion terms · 2 Excludes2 · 2 use-additional codes · 1 code-first instruction

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

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

  • MS-DRG 927 — EXTENSIVE BURNS OR FULL THICKNESS BURNS WITH MV >96 HOURS WITH SKIN GRAFT (MDC 22)
  • MS-DRG 928 — FULL THICKNESS BURN WITH SKIN GRAFT OR INHALATION INJURY WITH CC/MCC (MDC 22)
  • MS-DRG 929 — FULL THICKNESS BURN WITH SKIN GRAFT OR INHALATION INJURY WITHOUT CC/MCC (MDC 22)

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 Overview

Corrosion of third degree of shoulder and upper limb, except wrist and hand, unspecified site, initial encounter is a billable ICD-10-CM diagnosis code (T22.70XA).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T22.70XA in the official ICD-10-CM tabular list.

Notes without a marker are published on T22.70XA itself; “inherited from” names the category or block whose note applies here.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • burns and corrosions of first degree [erythema]
  • burns and corrosions of second degree [blisters][epidermal loss]
  • burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss]

Source: inherited from T20-T25

Excludes2 — Not Included Here

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

Source: inherited from T22

Code First

Underlying conditions that must be sequenced before this code.

  • (T51-T65) to identify chemical and intent

Source: inherited from T22.7

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • external cause code to identify place (Y92) inherited from T22.7
  • Use additional code from category T31 or T32 to identify extent of body surface involved inherited from T20-T25

7th Character Guide

"The appropriate 7th character is to be added to each code from category T22"

  • A — initial encounter (this page’s code)
  • D — subsequent encounter
  • S — sequela

How the encounter character is assigned. “Initial encounter” means the patient is receiving active treatment for the condition — it is not limited to the first visit, and a different or new provider giving active treatment still assigns it. “Subsequent encounter” covers care during the healing or recovery phase after active treatment. “Sequela” is for complications or conditions that arise as a direct result of the original condition.

ICD-10-CM Official Guidelines for Coding and Reporting, Section I.C.19.a (paraphrased by MedCoder).

Variant codes in this family

T22.70XA, T22.70XD, T22.70XS

Character meanings are CMS's official 7th-character extensions for this family, as carried in each variant code's official description; variant codes are registry rows. The explanation of how the encounter character is assigned is MedCoder editorial, distinct from the official content above it.

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Corrosion of third degree of shoulder and upper limb, except wrist and hand, unspecified site, initial encounter

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), and none are recorded for this code. Note changes are tracked from FY2027 only.

Decision Points

The directives on this code's own record, as a pre-claim checklist.

  1. A 7th character applies in this family. Confirm the documented encounter matches the character assigned. See the official 7th-character definitions and this code’s variants
  2. Sequencing: 1 Code First instruction — the underlying condition is sequenced before this code when present. See the Code First notes
  3. 2 Use Additional Code instructions — report the named additional code(s) when the documentation supports them. See the Use Additional Code notes
  4. 2 Excludes2 entries — those conditions are not part of this code and may be reported additionally when documented. See the Excludes2 notes

Checklist rows are derived from this code's own official directives; the wording of each check is MedCoder editorial. The official notes themselves are in the sections each row links to.

Verify Before Coding

  • CC as a secondary diagnosis (FY2026). Can raise the stay's MS-DRG severity tier.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

Other codes that name T22.70XA or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 2 Excludes1 notes: T07 — Unspecified multiple injuries (via T22.-), T66 — Radiation sickness, unspecified (via T22.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 122 Excludes2 notes: S00 — Superficial injury of head (via T22.-), S00-S09 — Injuries to the head (S00-S09) (via T22.-), S01 — Open wound of head (via T22.-), S02 — Fracture of skull and facial bones (via T22.-), S03 — Dislocation and sprain of joints and ligaments of head (via T22.-), S04 — Injury of cranial nerve (via T22.-), S05 — Injury of eye and orbit (via T22.-), S06 — Intracranial injury (via T22.-), S07 — Crushing injury of head (via T22.-), S08 — Avulsion and traumatic amputation of part of head (via T22.-), S09 — Other and unspecified injuries of head (via T22.-), S10 — Superficial injury of neck (via T22.-), S10-S19 — Injuries to the neck (S10-S19) (via T22.-), S11 — Open wound of neck (via T22.-), S12 — Fracture of cervical vertebra and other parts of neck (via T22.-), S13 — Dislocation and sprain of joints and ligaments at neck level (via T22.-), S14 — Injury of nerves and spinal cord at neck level (via T22.-), S15 — Injury of blood vessels at neck level (via T22.-), S16 — Injury of muscle, fascia and tendon at neck level (via T22.-), S17 — Crushing injury of neck (via T22.-), +102 more.

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper Relationships (FY2026)

CC — Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 8 clinically related codes on its CMS exclusion list. Does not count toward severity when the stay groups to DRGs 928-929 (Full Thickness Burn with Skin Graft or Inhalation Injury).

Potential MS-DRG participation — not a DRG assignment.

Named in the grouper logic of 3 MS-DRGs: DRG 927 (MDC 22), DRG 928 (MDC 22), DRG 929 (MDC 22).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):INJ019 — Burn and corrosion, initial encounter (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical process (MS-DRG)

Acts as CC — raises the severity of other admissions. CMS groups these diagnoses into one MS-DRG principal-diagnosis exclusion process — a CC/MCC on this list never raises severity when the principal diagnosis is also on it.

T22.30XA — Burn of third degree of shoulder and upper limb, except wrist and hand, unspecified site, initial encounter, T22.391A — Burn of third degree of multiple sites of right shoulder and upper limb, except wrist and hand, initial encounter, T22.392A — Burn of third degree of multiple sites of left shoulder and upper limb, except wrist and hand, initial encounter, T22.399A — Burn of third degree of multiple sites of unspecified shoulder and upper limb, except wrist and hand, initial encounter, T22.791A — Corrosion of third degree of multiple sites of right shoulder and upper limb, except wrist and hand, initial encounter, T22.792A — Corrosion of third degree of multiple sites of left shoulder and upper limb, except wrist and hand, initial encounter, T22.799A — Corrosion of third degree of multiple sites of unspecified shoulder and upper limb, except wrist and hand, initial encounter

Same injury, other encounter phase

Same injury, coded at a different phase of treatment via the 7th character.

T22.70XD — Corrosion of third degree of shoulder and upper limb, except wrist and hand, unspecified site, subsequent encounterCompare T22.70XA vs T22.70XD →, T22.70XS — Corrosion of third degree of shoulder and upper limb, except wrist and hand, unspecified site, sequelaCompare T22.70XA vs T22.70XS →

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Burn and corrosion, initial encounter).

+935 more

Contextual Map

Every relationship of T22.70XA in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes (122)

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 22 — Burns[MDC crossing]: “Burns — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 377 same-MDC procedures group here; browse them on the MDC page.”

Nearest codes (40)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]

Frequently Asked Questions (FAQ) & Clinical Guidance

Does T22.70XA require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category T22.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to T22.70XA in its code family, with their registry titles.

View all codes in the T22 family