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ICD-10-CM 2027 diagnosis code

G89.18Other acute postprocedural pain

✓ Billable / specific

G89.18 is a valid, billable ICD-10-CM code for other acute postprocedural pain. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About G89.18

G89.18 is the ICD-10-CM diagnosis code for other acute postprocedural pain. It belongs to category G89 (pain, not elsewhere classified), block G89-G99 (other disorders of the nervous system) and chapter 6 (diseases of the nervous system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within G89.1, choose G89.18 (Other acute postprocedural pain) only when documentation doesn't support a more specific option: acute pain due to trauma (G89.11) and acute post-thoracotomy pain (G89.12).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 947 (Signs and Symptoms with MCC, relative weight 1.261) and DRG 948 (Signs and Symptoms without MCC, relative weight 0.7835), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 338.18 (other acute postoperative pain).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Postoperative pain NOS
  • Postprocedural pain NOS

Notes that apply from higher levels

Instructions written at a parent level also apply to G89.18.

› From G89 Pain, not elsewhere classified
Excludes1
  • generalized pain NOS (R52)
  • pain disorders exclusively related to psychological factors (F45.41)
  • pain NOS (R52)
Excludes2
Code also
  • related psychological factors associated with pain (F45.42)

Broader instructions also apply from Chapter 6: Diseases of the nervous system.

Alphabetic index entries

3 entries

Terms in the official ICD-10-CM index that lead to G89.18.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 23 · Factors Influencing Health Status and Other Contacts with Health Services

ICD-9-CM equivalent

Converter →
  • 338.18Other acute postoperative painexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about G89.18

Is G89.18 billable?

Yes. G89.18 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can G89.18 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict G89.18 as a principal diagnosis.

Is G89.18 a CC or MCC?

No. G89.18 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does G89.18 group to?

G89.18 is used in the MS-DRG v44.0 logic for MS-DRG 947 (Signs and Symptoms with MCC) and MS-DRG 948 (Signs and Symptoms without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for G89.18?

The CMS General Equivalence Mappings map G89.18 to ICD-9-CM 338.18.