ICD10BillableValid for clinical use

ICD-10 Code Z48.811: Encounter for surgical aftercare following surgery on the nervous system

Z48.811 is a billable ICD-10 diagnosis code used to classify Encounter for surgical aftercare following surgery on the nervous system in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Factors influencing health status and contact with health services (Z00-Z99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Factors influencing health status and contact with health services (Z00-Z99).

When is it used?

  • May be used when a clinician documents encounter for surgical aftercare following surgery on the nervous system in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
21Factors influencing health status and contact with health services (Z00-Z99)
block
Z40-Z53Encounters for other specific health care
category
Z48Encounter for other postprocedural aftercare
category
Z48.8Encounter for other specified postprocedural aftercare
category
Z48.81Encounter for surgical aftercare following surgery on specified body systems
currentZ48.81

Official coding notes

Excludes2 (may code together if documented)
  • encounter for surgical aftercare following surgery on the sense organs (Z48.810)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

General Physician

Coverage-related procedures and services

CPT 0349Uhigh
DRUG METABOLISM OR PROCESSING (MULTIPLE CONDITIONS), WHOLE BLOOD OR BUCCAL SPECIMEN, DNA ANALYSIS, 27 GENE REPORT, WITH VARIANT ANALYSIS, INCLUDING REPORTED PHENOTYPES AND IMPACTED GENE-DRUG INTERACTIONS
Source: CMS coverage guidance
CPT 0423Uhigh
PSYCHIATRY (EG, DEPRESSION, ANXIETY), GENOMIC ANALYSIS PANEL, INCLUDING VARIANT ANALYSIS OF 26 GENES, BUCCAL SWAB, REPORT INCLUDING METABOLIZER STATUS AND RISK OF DRUG TOXICITY BY CONDITION
Source: CMS coverage guidance
CPT 81227high
CYP2C9 (CYTOCHROME P450, FAMILY 2, SUBFAMILY C, POLYPEPTIDE 9) (EG, DRUG METABOLISM), GENE ANALYSIS, COMMON VARIANTS (EG, *2, *3, *5, *6)
Source: CMS coverage guidance
CPT 81381high
HLA CLASS I TYPING, HIGH RESOLUTION (IE, ALLELES OR ALLELE GROUPS); ONE ALLELE OR ALLELE GROUP (EG, B*57:01P), EACH
Source: CMS coverage guidance
CPT 81374high
HLA CLASS I TYPING, LOW RESOLUTION (EG, ANTIGEN EQUIVALENTS); ONE ANTIGEN EQUIVALENT (EG, B*27), EACH
Source: CMS coverage guidance
CPT 0434Uhigh
DRUG METABOLISM (ADVERSE DRUG REACTIONS AND DRUG RESPONSE), GENOMIC ANALYSIS PANEL, VARIANT ANALYSIS OF 25 GENES WITH REPORTED PHENOTYPES
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Encounter for surgical aftercare following surgery on the nervous system

Frequently asked questions

Code details

CodeZ48.811
SystemICD10
Display nameEncounter for surgical aftercare following surgery on the nervous system
ChapterFactors influencing health status and contact with health services (Z00-Z99)
BlockEncounters for other specific health care

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
AftercareAftercare

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.