G89.12 ICD-10-CM Code: Acute post-thoracotomy pain

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for G89.12 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on G89.12 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for G89.12

MedCoder structured workflow — derived from this code’s own official record

Before you code G89.12

1. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with G89.12. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).

   See the official tabular notes

Choose the right path

1. Does the documentation support a condition named in G89.12’s Excludes1 note?
   Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
   No → Continue.

   ReviewR52, F45.41

Consider G89.12. Then review the Code Also note, and confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement

Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).

Acuity

Acute or chronic as documented; when both are documented and separate codes exist, both are reported with the acute code first (Guidelines I.B.8).

Official instructions as workflow

• Excludes1 — check before selecting G89.12(3 notes)

  Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with G89.12: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

  CompareR52, F45.41

  See the official tabular notes · Guidelines I.A.12.a

• Excludes2 — not part of G89.12(27 notes)

  Coding workflow: The conditions named in this note are not included in G89.12. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareG50.1, G44, R10, M54.9, N64.4, H92.0

  See the official tabular notes · Guidelines I.A.12.b

• Code Also — related condition(1 note)

  Coding workflow: Review the related condition when both are documented and the instruction applies. A Code Also note does not fix sequencing; the order follows the circumstances of the encounter.

  ReviewF45.42

  See the official tabular notes · Guidelines I.A.17

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Indexed Clinical Terms (2)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

• Pain (s), acute, post-thoracotomy
• Pain (s), post-thoracotomy

Official Coding Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Verbatim excerpts from the ICD-10-CM Official Guidelines for Coding and Reporting (CMS/NCHS) that govern this code.

Don’t confuse G89.12 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of G89.12 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

• R52— Excludes1 conflict (Excludes1 — generally not reported together)

  Not coded here — the tabular list excludes this pair for the same encounter.

  Not reported together with this code, except where the two conditions are documented as unrelated.

  What moves you there: Documentation of generalized pain NOS moves the case to R52; the two are not reported together unless documented as unrelated.

  Full comparison: G89.12 vs R52 →

• F45.41— Excludes1 conflict (Excludes1 — generally not reported together)

  Not coded here — the tabular list excludes this pair for the same encounter.

  Not reported together with this code, except where the two conditions are documented as unrelated.

  What moves you there: Documentation of pain disorders exclusively related to psychological factors moves the case to F45.41; the two are not reported together unless documented as unrelated.

  Full comparison: G89.12 vs F45.41 →

• G50.1— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of atypical face pain adds G50.1; it is not part of this code and both may be reported when both are documented.

  Full comparison: G89.12 vs G50.1 →

• G44— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of headache syndromes adds G44; it is not part of this code and both may be reported when both are documented.

  Full comparison: G89.12 vs G44 →

• R10— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of abdomen pain adds R10; it is not part of this code and both may be reported when both are documented.

  Full comparison: G89.12 vs R10 →

• M54.9— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of back pain adds M54.9; it is not part of this code and both may be reported when both are documented.

  Full comparison: G89.12 vs M54.9 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Decision Points

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

1. 1 Code Also note — a second code may apply; the guidelines leave its sequencing to the circumstances of the encounter. See the Code Also notes
2. 3 Excludes1 entries — codes named there are generally not reported together with this code (Guidelines I.A.12.a). See the Excludes1 notes
3. 27 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

• No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

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

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name G89.12 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 1 Excludes1 note: R52 — Pain, unspecified (via G89.-).

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

Referenced by 1 Code Also instruction: F45.42 — Pain disorder with related psychological factors (via G89.-).

These codes suggest coding this condition alongside when both are present.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 2 MS-DRGs: DRG 947 (MDC 23), DRG 948 (MDC 23).

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

Clinical classification (AHRQ CCSR):NVS019 — Nervous system pain and pain syndromes (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 category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Nervous system pain and pain syndromes).

G89.0 — Central pain syndrome, G89.11 — Acute pain due to trauma, G89.18 — Other acute postprocedural pain, G89.21 — Chronic pain due to trauma, G89.22 — Chronic post-thoracotomy pain, G89.28 — Other chronic postprocedural pain, G89.29 — Other chronic pain, G89.3 — Neoplasm related pain (acute) (chronic), G89.4 — Chronic pain syndrome, G90.2 — Horner's syndrome, G90.50 — Complex regional pain syndrome I, unspecified, G90.511 — Complex regional pain syndrome I of right upper limb, G90.512 — Complex regional pain syndrome I of left upper limb, G90.513 — Complex regional pain syndrome I of upper limb, bilateral, G90.519 — Complex regional pain syndrome I of unspecified upper limb, G90.521 — Complex regional pain syndrome I of right lower limb, G90.522 — Complex regional pain syndrome I of left lower limb, G90.523 — Complex regional pain syndrome I of lower limb, bilateral, G90.529 — Complex regional pain syndrome I of unspecified lower limb, G90.59 — Complex regional pain syndrome I of other specified site, +4 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Pain”; these codes share that main term but sit in a different category of the Tabular List.

F45.41 — Pain disorder exclusively related to psychological factors (psychogenic), G50.1 — Atypical facial pain (face, facial, atypical), H57.1 — Ocular pain (ocular), I20.9 — Angina pectoris, unspecified (chest, ischemic), J34.89 — Other specified disorders of nose and nasal sinuses (nose), J39.2 — Other diseases of pharynx (pharynx), K08.89 — Other specified disorders of teeth and supporting structures (tooth), K13.79 — Other lesions of oral mucosa (mouth), K14.6 — Glossodynia (tongue), K62.89 — Other specified diseases of anus and rectum (anus), K82.9 — Disease of gallbladder, unspecified (gallbladder), M25.50 — Pain in unspecified joint (joint), M25.51 — Pain in shoulder (shoulder), M25.52 — Pain in elbow (joint, elbow), M25.53 — Pain in wrist (joint, wrist), M25.54 — Pain in joints of hand (joint, hand), M25.55 — Pain in hip (joint, hip), M25.56 — Pain in knee (joint, knee), M25.57 — Pain in ankle and joints of foot (joint, toe), M25.59 — Pain in other specified joint (joint, specified site NEC), +72 more

Contextual Map

Every relationship of G89.12 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.

Run G89.12 with these 2 related codes in Claim Check

Hierarchy

• G00-G99 — Chapter 6: Diseases of the Nervous System (G00-G99) (G00-G99)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Excludes1 notes

• R52 — Pain, unspecified[Excludes1](via G89.-): “acute and chronic pain, not elsewhere classified (G89.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Code Also instructions

• F45.42 — Pain disorder with related psychological factors[Code Also](via G89.-): “associated acute or chronic pain (G89.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

• NVS019 — Nervous system pain and pain syndromes[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

MS-DRG Grouper

• DRG 947 — SIGNS AND SYMPTOMS WITH MCC[MS-DRG]: “SIGNS AND SYMPTOMS WITH MCC (MDC 23)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 948 — SIGNS AND SYMPTOMS WITHOUT MCC[MS-DRG]: “SIGNS AND SYMPTOMS WITHOUT MCC (MDC 23)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026

MDC crossing

• MDC 23 — Factors Influencing Health Status and Other Contacts with Health Services[MDC crossing]: “Factors Influencing Health Status and Other Contacts with Health Services — 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. 1,235 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

• Pain (s), acute, post-thoracotomy[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Pain (s), post-thoracotomy[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (12)

• G89 — Pain, not elsewhere classified[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G89.0 — Central pain syndrome[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G89.1 — Acute pain, not elsewhere classified[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G89.11 — Acute pain due to trauma[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G89.18 — Other acute postprocedural pain[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G89.2 — Chronic pain, not elsewhere classified[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G89.21 — Chronic pain due to trauma[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G89.22 — Chronic post-thoracotomy pain[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• and 4 more

Change history

• FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Common coding questions

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data

CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page

Coding guidelines Official source data

ICD-10-CM Official Guidelines for Coding and Reporting (FY2026), quoted by section Release, file and checksum · Publisher’s page

Claim edits Official source data

CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page

Inpatient payment groups Official source data

CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page

Change history and date-of-service validity Official source data

CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page

Comparisons, relationships and the contextual map MedCoder structured relationship

Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears

Summary and FAQ answers MedCoder explanation

Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Nearest Codes in This Family

Official ICD-10-CM classifications closest to G89.12 in its code family, with their registry titles.

• G89 — Pain, not elsewhere classified
• G89.0 — Central pain syndrome
• G89.1 — Acute pain, not elsewhere classified
• G89.11 — Acute pain due to trauma
• G89.18 — Other acute postprocedural pain
• G89.2 — Chronic pain, not elsewhere classified
• G89.21 — Chronic pain due to trauma
• G89.22 — Chronic post-thoracotomy pain
• G89.28 — Other chronic postprocedural pain
• G89.29 — Other chronic pain

View all codes in the G89 family